STAGE3 OK

問題：
Line 345 將家族成員 ID 載入內存（ToList）
- 如果家族有 100+ 成員，載入 100-400 bytes

優化：
移除 ToList()，改為使用 IQueryable 子查詢
- var ccList = cc.ToList(); // 移除
- 直接使用 cc 進行 Contains 查詢
- 生成 SQL: WHERE num IN (SELECT...) OR leader IN (SELECT...)

效果：
✓ 減少內存占用：100-400 bytes → 0
✓ 完全在數據庫執行
✓ SQL 優化器可以更好地優化查詢計劃

對比：
- 原始版本（載入內存）：2 次查詢
- 優化版本（子查詢）：1 次查詢（最佳）

review_report.txt

@@ -0,0 +1,12 @@
+═══════════════════════════════════════════════════════════════
+🔍 AsEnumerable/AsQueryable/ToList 完整 REVIEW
+═══════════════════════════════════════════════════════════════
+
+檢查範圍：Batch 1-3 所有已修改文件
+檢查標準：
+  ✅ 最佳選擇 - 性能和可讀性都最優
+  ⚠️  可優化 - 可以進一步優化
+  ❌ 需修正 - 存在明顯問題
+
+═══════════════════════════════════════════════════════════════
+

web/App_Code/api/FilesSetController.cs

@@ -52,7 +52,7 @@ public class FilesSetController : ApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.files.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.files.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             //var prod2 = _db.actItem_files.AsEnumerable().Where(q => q.files_num == id).ToList(); //刪除品項的相關文件
@@ -84,14 +84,14 @@ public class FilesSetController : ApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
 
-            var prod = _db.files.AsEnumerable().Where(q => ids.Contains(q.num)).ToList();
+            var prod = _db.files.Where(q => ids.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
                 //刪除品項的相關文件
-                var prod2 = _db.actItem_files.AsEnumerable().Where(q => ids.Contains(Convert.ToInt32(q.files_num))).ToList();
+                var prod2 = _db.actItem_files.Where(q => ids.Contains(q.files_num)).ToList();
-                if (prod2.Count > 0)
+                if (prod2.Count() > 0)
                 {
                     _db.actItem_files.RemoveRange(prod2);
                 }
@@ -123,7 +123,7 @@ public class FilesSetController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.files q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.files.AsEnumerable();
+        var qry = _db.files.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.subject))
             qry = qry.Where(o => o.subject.Contains(q.subject));
@@ -157,9 +157,12 @@ public class FilesSetController : ApiController
         else
             qry = qry.OrderByDescending(o => o.num);
 
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-             list = qry.ToPagedList(page, pageSize).Select(x => new
+             list = qryList.Select(x => new
             {
                 num = x.num,
                  subject = x.subject,
@@ -168,7 +171,7 @@ public class FilesSetController : ApiController
                  word = x.word,
                
             }),
-            count = qry.Count()
+            count = count
 
         };
 

web/App_Code/api/FollowerController.cs

@@ -55,7 +55,7 @@ public class FollowerController : ApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.followers.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.followers.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         /*if (prod != null)
         {
 
@@ -94,9 +94,9 @@ public class FollowerController : ApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
 
-            var prod = _db.followers.AsEnumerable().Where(q => getDelItem.Contains(q.num)).ToList();
+            var prod = _db.followers.Where(q => getDelItem.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {               
                 foreach (var item in prod)
@@ -139,8 +139,8 @@ public class FollowerController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.follower q, 
         int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        ////var qry = _db.followers.Where(a => a.IsDel == false).AsEnumerable();////不確定是否新增欄位? 先註解
+        ////var qry = _db.followers.Where(a => a.IsDel == false).AsQueryable();////不確定是否新增欄位? 先註解
-        var qry = _db.followers.AsEnumerable();
+        var qry = _db.followers.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.f_number))
             qry = qry.Where(o => o.f_number.Contains(q.f_number.Trim()));
@@ -151,7 +151,7 @@ public class FollowerController : ApiController
         if (q.birthday2.HasValue) 
             qry = qry.Where(o => o.birthday < Convert.ToDateTime(q.birthday2.Value).AddDays(1));
         if (!string.IsNullOrEmpty(q.address))
-            qry = qry.Where(o => o.address !=null &&  o.address.Contains(q.address?.Trim()));
+            qry = qry.Where(o => o.address !=null &&  o.address.Contains(q.address.Trim()));
         //if (q.num.HasValue && q.num.Value>0)
         //    qry = qry.Where(o => o.num==q.num.Value);
         if (q.ept_self.HasValue && q.ept_self.Value )//排除自己
@@ -215,9 +215,10 @@ public class FollowerController : ApiController
 
         var tdesc = publicFun.enum_desc<Model.follower.type>();
         var count = qry.Count(); //pageSize = count;//一次取回??
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 f_number = x.f_number,
@@ -339,9 +340,9 @@ public class FollowerController : ApiController
           
             //int ccc = cc.Count();
 
-           
+            // 優化：使用子查詢在數據庫層面執行，避免載入所有家族成員 ID
-
+            // 生成 SQL: WHERE num IN (SELECT...) OR leader IN (SELECT...)
-            var qry = _db.followers.AsEnumerable().Where(f => cc.Any(x => x == f.num) || cc.Any(x => x == f.leader));
+            var qry = _db.followers.Where(f => cc.Contains(f.num) || (f.leader.HasValue && cc.Contains(f.leader.Value)));
 
 
 
@@ -359,11 +360,12 @@ public class FollowerController : ApiController
             qry = qry.OrderByDescending(o => o.num);
             MyWeb.encrypt encrypt = new MyWeb.encrypt();
             var tdesc = publicFun.enum_desc<Model.follower.type>();
-            int i = 1;
             var count = qry.Count(); //pageSize = count;//一次取回??
+            var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+            int i = 1;
             var ret = new
             {
-                list = qry.ToPagedList(page, pageSize).Select(x => new
+                list = qryList.Select(x => new
                 {
                     id = i++,
                     num = x.num,
@@ -524,13 +526,14 @@ public class FollowerController : ApiController
         if (_follower > 0)
         {
                       
-            var qry = _db.followers_tablet.AsEnumerable().Where(x=>( x.f_num??0) == _follower);
+            var qry = _db.followers_tablet.Where(x=> x.f_num == _follower);
             qry = qry.OrderByDescending(o => o.num);
             var count = qry.Count(); //pageSize = count;//一次取回??
+            var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
             int i = 1;
             var ret = new
             {
-                list = qry.ToPagedList(page, pageSize).Select(x => new
+                list = qryList.Select(x => new
                 {
                     id = i++,
                     num = x.num,
@@ -593,7 +596,7 @@ public class FollowerController : ApiController
     [Route("api/follower/tabletDelete/{id}")]
     public void tabletDelete(int id)
     {
-        var prod = _db.followers_tablet.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.followers_tablet.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             _db.followers_tablet.Remove(prod);

web/App_Code/api/accountingController.cs

@@ -52,7 +52,7 @@ public class accountingController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.accountings.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.accountings.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             var prod2 = prod.accounting_files;
@@ -89,12 +89,12 @@ public class accountingController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
 
-            var prod = _db.accountings.AsEnumerable().Where(q => getDelItem.Contains(q.num)).ToList();
+            var prod = _db.accountings.Where(q => getDelItem.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
-                var prod2 = _db.accounting_files.AsEnumerable().Where(q => q.accounting_num.HasValue && getDelItem.Contains(q.accounting_num.Value)).ToList();
+                var prod2 = _db.accounting_files.Where(q => q.accounting_num.HasValue && getDelItem.Contains(q.accounting_num.Value)).ToList();
                 if (prod2.Count() > 0)
                 {
                     publicFun publicFun = new publicFun();
@@ -126,7 +126,7 @@ public class accountingController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.accounting q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.accountings.AsEnumerable();
+        var qry = _db.accountings.AsQueryable();
        
         if (q.category.HasValue)
             qry = qry.Where(o => o.category == q.category.Value);
@@ -215,10 +215,12 @@ public class accountingController : BaseApiController
             qry = qry.OrderByDescending(o => o.num);
 
         var tdesc = publicFun.enum_desc<Model.accounting.type>();
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
 
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 category = x.category,
@@ -245,7 +247,7 @@ public class accountingController : BaseApiController
                 total =(x.price ?? 0)+( x.tax?? 0),
 
             }),
-            count = qry.Count()
+            count = count
 
         };
 
@@ -259,7 +261,7 @@ public class accountingController : BaseApiController
     public IHttpActionResult GetTitleKindList([FromBody] Model.ViewModel.accounting_kind q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.accounting_kind.AsEnumerable();
+        var qry = _db.accounting_kind.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -297,7 +299,7 @@ public class accountingController : BaseApiController
     public IHttpActionResult GetAccountKindList([FromBody] Model.ViewModel.accounting_kind2 q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.accounting_kind2.AsEnumerable();
+        var qry = _db.accounting_kind2.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -341,15 +343,16 @@ public class accountingController : BaseApiController
         if (q.accounting_num.HasValue && q.accounting_num.Value > 0)
         {
             //檢查
-            var qry = _db.accounting_files.AsEnumerable();
+            var qry = _db.accounting_files.Where(o => o.accounting_num == q.accounting_num.Value);
-            qry = qry.Where(o => o.accounting_num == q.accounting_num.Value);
+            qry = qry.OrderByDescending(x => x.num);
-            qry.OrderByDescending(x => x.num);
 
+            var count = qry.Count();
+            var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
             int i = 1;
             //已有值
             var ret = new
             {
-                list = qry.ToPagedList(page, pageSize).Select(x => new
+                list = qryList.Select(x => new
                 {
                     id = i++,
                     num = x.num,
@@ -357,7 +360,7 @@ public class accountingController : BaseApiController
                     pic1 = x.pic1,
                     pic1_name = x.pic1_name,
                 }),
-                count = qry.Count(),
+                count = count,
             };
 
             if (ret.list == null) throw new HttpResponseException(HttpStatusCode.NotFound);
@@ -473,7 +476,7 @@ public class accountingController : BaseApiController
     [Route("api/accounting/DeleteFilesItem/{id}")]//刪除相關檔案
     public void DeleteFilesItem(int id)
     {
-        var prod = _db.accounting_files.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.accounting_files.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             if (!string.IsNullOrEmpty(prod.pic1))

web/App_Code/api/activity_kindController.cs

@@ -54,7 +54,7 @@ public class activity_kindController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.actItem_kind q,
     int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.actItem_kind.AsEnumerable();
+        var qry = _db.actItem_kind.AsQueryable();
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
         if (!string.IsNullOrEmpty(q.status))

web/App_Code/api/adminUserController.cs

@@ -52,7 +52,7 @@ public class adminUserController : ApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.admins.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.admins.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {       
 
@@ -76,7 +76,7 @@ public class adminUserController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.admin q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.admins.AsEnumerable();
+        var qry = _db.admins.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.u_id))
             qry = qry.Where(o => o.u_id.Contains(q.u_id));
@@ -90,17 +90,15 @@ public class adminUserController : ApiController
 
         if(q.removeExist.HasValue && q.removeExist.Value)
         {
+            // 優化：使用子查詢在數據庫層面執行，避免載入所有會員的 admin_num
+            var usedAdminNums = _db.members.Select(b => b.admin_num);
             if (q.num.HasValue && q.num.Value > 0)
             {
-                qry = qry.Where(o => (!(from b in _db.members.AsEnumerable()
+                qry = qry.Where(o => !usedAdminNums.Contains(o.num) || o.num == q.num.Value);
-                                        select b.admin_num)
-                         .Contains(o.num)) || o.num == Convert.ToInt32(q.num.Value));
             }
             else
             {
-                qry = qry.Where(o => (!(from b in _db.members.AsEnumerable()
+                qry = qry.Where(o => !usedAdminNums.Contains(o.num));
-                                        select b.admin_num)
-                        .Contains(o.num)));
             }
         }
 
@@ -114,9 +112,12 @@ public class adminUserController : ApiController
         else
             qry = qry.OrderByDescending(o => o.num);
 
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-             list = qry.ToPagedList(page, pageSize).Select(x => new
+             list = qryList.Select(x => new
             {
                 num = x.num,
                  u_id = x.u_id,
@@ -124,7 +125,7 @@ public class adminUserController : ApiController
                  power = x.power,
                
             }),
-            count = qry.Count()
+            count = count
 
         };
 

web/App_Code/api/appellationController.cs

@@ -44,19 +44,22 @@ public class appellationController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.appellation q,
        int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.appellations.AsEnumerable();
+        var qry = _db.appellations.AsQueryable();
 
 
         qry = qry.OrderBy(o => o.num);
 
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 title = x.title,
             }),
-            count = qry.Count()
+            count = count
         };
 
 

web/App_Code/api/bedController.cs

@@ -42,7 +42,7 @@ public class bedController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(string id)
     {
-        var prod = _db.bed_order.AsEnumerable().Where(q => q.bed_order_no == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.bed_order.Where(q => q.bed_order_no == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             //刪除訂單明細
@@ -80,7 +80,7 @@ public class bedController : BaseApiController
                 {
                     order_no = "ED" + DateTime.Now.ToString("yyMMdd");
 
-                    var qry = _db.companies.AsEnumerable();
+                    var qry = _db.companies.AsQueryable();
                     var prod = qry.Where(q => q.num == 1).FirstOrDefault();
                     if (prod != null)
                     {
@@ -157,16 +157,18 @@ public class bedController : BaseApiController
     public IHttpActionResult GetDetailList([FromBody] Model.bed_order q,
    int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.bed_order_detail.AsEnumerable();
+        var qry = _db.bed_order_detail.Where(o => o.bed_order_no == q.bed_order_no);
-            qry = qry.Where(o => o.bed_order_no == q.bed_order_no);
 
         qry = qry.OrderBy(o => o.checkIn_date ).ThenBy(o => o.num);
 
         int i = 1;
         var tdesc = publicFun.enum_desc<Model.bed_kind.bed_type>();
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 id = i++,
                 num = x.num,
@@ -197,7 +199,7 @@ public class bedController : BaseApiController
                 },
                 license = x.license,
             }),
-            count = qry.Count()
+            count = count
 
         };
         return Ok(ret);
@@ -250,7 +252,7 @@ public class bedController : BaseApiController
     [Route("api/bed/DeleteBedDetail/{id}")]//刪除detail
     public void DeleteBedDetail(int id)
     {
-        var prod = _db.bed_order_detail.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.bed_order_detail.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             

web/App_Code/api/bed_kindController.cs

@@ -52,7 +52,7 @@ public class bed_kindController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.bed_kind q,
     int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.bed_kind.AsEnumerable();
+        var qry = _db.bed_kind.AsQueryable();
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
         if (!string.IsNullOrEmpty(q.sex))
@@ -60,16 +60,20 @@ public class bed_kindController : ApiController
         if (q.root.HasValue)
             qry = qry.Where(o => o.root.Value == q.root.Value);
         qry = qry.OrderBy(o => o.range).ThenBy(o => o.num);
+
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 kind = x.kind,
                 sex = x.sex,
 
             }),
-            count = qry.Count()
+            count = count
 
         };
         return Ok(ret);
@@ -83,7 +87,7 @@ public class bed_kindController : ApiController
         var tdesc = publicFun.enum_desc<Model.bed_kind.bed_type>();
         //var tdesc2 = tdesc.ToArray().Select(x=>x.Value); //[0]單人床,[1]雙人床
         //var tdesc3 = tdesc.ToArray().Select(x=>x.Key); //[0]1,[1]2
-        var qry = _db.bed_kind_detail.AsEnumerable();
+        var qry = _db.bed_kind_detail.AsQueryable();
         if (q.bed_kind_id.HasValue)
             qry = qry.Where(o => o.bed_kind_id == q.bed_kind_id);
         if (!string.IsNullOrEmpty(q.bed_name))
@@ -103,17 +107,19 @@ public class bed_kindController : ApiController
         if (q.inTime.HasValue )
         {
             //判斷日期沒庫存不能選
-            var bedDt = _db.bed_order_detail.AsEnumerable().Where(f => f.checkIn_date.HasValue && f.checkIn_date ==q.inTime.Value ).Select(f => f.bed_kind_detail_id.ToString());//掛單表單明細
+            var bedDt = _db.bed_order_detail.Where(f => f.checkIn_date.HasValue && f.checkIn_date ==q.inTime.Value && f.bed_kind_detail_id.HasValue).Select(f => f.bed_kind_detail_id.Value).ToList();//掛單表單明細
-            qry = qry.Where(o => !bedDt.ToArray().Contains(o.num.ToString()));
+            qry = qry.Where(o => !bedDt.Contains(o.num));
 
         }
         qry = qry.OrderBy(o => o.bed_name);
         int i = 1;
 
-        if (pageSize > 0) qry = qry.ToPagedList(page, pageSize);
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.Select(x => new
+            list = qryList.Select(x => new
             {
                 id = i++,
                 num = x.num,
@@ -122,7 +128,7 @@ public class bed_kindController : ApiController
                 bed_type_txt = x.bed_type.HasValue? tdesc[x.bed_type ?? 1] : "",
                 demo = x.demo,
             }),
-            count = qry.Count()
+            count = count
 
         };
         return Ok(ret);
@@ -186,7 +192,7 @@ public class bed_kindController : ApiController
     [Route("api/bed_kind/DeleteBedKindDetail/{id}")]//刪除分類的detail
     public void DeleteActKindDetail(int id)
     {
-        var prod = _db.bed_kind_detail.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.bed_kind_detail.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
 

web/App_Code/api/countryController.cs

@@ -44,22 +44,25 @@ public class countryController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.country q,
        int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.countries.AsEnumerable();
+        var qry = _db.countries.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.keyword))
             qry = qry.Where(o => o.ID.Contains(q.keyword.Trim()) || o.name_en.Contains(q.keyword.Trim()) || o.name_zh.Contains(q.keyword.Trim()));
       
         qry = qry.OrderBy(o => o.range).ThenBy(o => o.name_en);
 
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 id = x.ID,
                 name_en = x.name_en,
                 name_zh = x.name_zh,
             }),
-            count = qry.Count()
+            count = count
         };
 
 

web/App_Code/api/memberController.cs

@@ -48,7 +48,7 @@ public class memberController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.members.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.members.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             if(!string.IsNullOrEmpty(prod.pic1))
@@ -79,7 +79,7 @@ public class memberController : BaseApiController
     [Route("api/member/DeleteCheck/{id}")]
     public void DeleteCheck(int id) //刪除考勤資料
     {
-        var prod = _db.member_check.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.member_check.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             _db.member_check.Remove(prod);
@@ -93,9 +93,9 @@ public class memberController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
 
-            var prod = _db.members.AsEnumerable().Where(q => getDelItem.Contains(q.num)).ToList();
+            var prod = _db.members.Where(q => getDelItem.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
                 publicFun publicFun = new publicFun();
@@ -107,8 +107,8 @@ public class memberController : BaseApiController
                     }
                 }
 
-                var prod2 = _db.member_check.AsEnumerable().Where(q => getDelItem.Contains(Convert.ToInt32(q.mem_num))).ToList();
+                var prod2 = _db.member_check.Where(q => q.mem_num.HasValue && getDelItem.Contains(q.mem_num.Value)).ToList();
-                if (prod2.Count > 0)
+                if (prod2.Count() > 0)
                 {
                     _db.member_check.RemoveRange(prod2);
                     //_db.SaveChanges();
@@ -135,8 +135,8 @@ public class memberController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
-            var prod = _db.member_check.AsEnumerable().Where(q => ids.Contains(q.num)).ToList();
+            var prod = _db.member_check.Where(q => ids.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
                 _db.member_check.RemoveRange(prod);
@@ -150,7 +150,7 @@ public class memberController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.member q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.members.AsEnumerable();
+        var qry = _db.members.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.u_name))
             qry = qry.Where(o => o.u_name.Contains(q.u_name.Trim()));
@@ -220,10 +220,11 @@ public class memberController : BaseApiController
         else
             qry = qry.OrderByDescending(o => o.num);
      
-       
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 m_number = x.m_number,
@@ -242,7 +243,7 @@ public class memberController : BaseApiController
                 starttime = x.group_kind.HasValue ? x.member_group.starttime : (object)null,
                 demo = x.demo,
             }),
-            count = qry.Count()
+            count = count
         };
 
 
@@ -256,7 +257,7 @@ public class memberController : BaseApiController
     public IHttpActionResult GetCheckList([FromBody] Model.ViewModel.member_check q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.member_check.AsEnumerable();
+        var qry = _db.member_check.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.u_name))
             qry = qry.Where(o => o.member.u_name.Contains(q.u_name));
@@ -317,9 +318,11 @@ public class memberController : BaseApiController
 
         var tdesc = publicFun.enum_desc<Model.member.attendances.type>();
         var tdesc2 = publicFun.enum_desc<Model.member.attendances.login>();
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 m_number = x.member.m_number,
@@ -332,7 +335,7 @@ public class memberController : BaseApiController
                 login_type_desc = tdesc2[x.login_type ?? 1]
                
             }),
-            count = qry.Count()
+            count = count
         };
 
 
@@ -346,7 +349,7 @@ public class memberController : BaseApiController
     public IHttpActionResult GetGroupList([FromBody] Model.ViewModel.member_group q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.member_group.AsEnumerable();
+        var qry = _db.member_group.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -394,7 +397,7 @@ public class memberController : BaseApiController
     public IHttpActionResult GetTitleList([FromBody] Model.ViewModel.member_title q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.member_title.AsEnumerable();
+        var qry = _db.member_title.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));

web/App_Code/api/member_titleController.cs

@@ -52,7 +52,7 @@ public class member_titleController : ApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.member_title q,
 int page, int pageSize = 10, string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.member_title.AsEnumerable();
+        var qry = _db.member_title.AsQueryable();
         var ret = new { list = "", count = 0 };
         return Ok(ret);
     }

web/App_Code/api/newsController.cs

@@ -49,11 +49,11 @@ public class newsController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.news.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.news.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             //刪除檔案
-            var prod2 = _db.news_files.AsEnumerable().Where(q => q.news_id == id).ToList();
+            var prod2 = _db.news_files.Where(q => q.news_id == id).ToList();
             if (prod2.Count > 0)
             {
                 foreach (var item in prod2)
@@ -91,12 +91,12 @@ public class newsController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
 
-            var prod = _db.news.AsEnumerable().Where(q => getDelItem.Contains(q.num)).ToList();
+            var prod = _db.news.Where(q => getDelItem.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
-                var prod2 = _db.news_files.AsEnumerable().Where(q => getDelItem.Contains(q.news_id)).ToList();
+                var prod2 = _db.news_files.Where(q => getDelItem.Contains(q.news_id)).ToList();
                 if (prod2.Count > 0)
                 {
                     publicFun publicFun = new publicFun();
@@ -139,7 +139,7 @@ public class newsController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.news q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false, bool top = false)
     {
-        var qry = _db.news.AsEnumerable();
+        var qry = _db.news.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.subject))
             qry = qry.Where(o => o.subject.Contains(q.subject.Trim()));
@@ -258,10 +258,13 @@ public class newsController : BaseApiController
             else
                 qry = qry.OrderByDescending(o => o.topping).ThenByDescending(o => o.num);
         }
+
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
        
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 subject = x.subject,
@@ -282,7 +285,7 @@ public class newsController : BaseApiController
                 topping = x.topping
 
             }),
-            count = qry.Count()
+            count = count
 
         };
 
@@ -298,7 +301,7 @@ public class newsController : BaseApiController
     {
       
 
-        var qry = _db.news_kind.AsEnumerable();
+        var qry = _db.news_kind.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))         
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -319,17 +322,18 @@ public class newsController : BaseApiController
             range = o.range,
         }).OrderBy(x => x.root).ThenBy(x => x.kind).ToList(), 0, 0);
 
-
+        var count = qry.Count();
+        var qry2List = (pageSize > 0) ? qry2.ToPagedList(page, pageSize).ToList() : qry2.ToList();
 
         var ret = new
         {
-            list = qry2.ToPagedList(page, pageSize).Select(x => new
+            list = qry2List.Select(x => new
             {
                 num = x.num,
                 kind = new TreeView().RptDash(x.Level) + x.kind,            
 
             }),
-            count = qry.Count()
+            count = count
         };
       
 

web/App_Code/api/orderdetailController.cs

@@ -27,14 +27,14 @@ public class orderdetailController:ApiController
         //var OrderList = _db.pro_order.Where(u => u.activity_num == activity_num).Select(j => j.order_no).ToList();
         //var gdzOrderList = _db.pro_order_detail.Where(o => OrderList.Contains(o.order_no) && o.print_id.Contains("主")).Select(o => o.order_no).Distinct().ToList();
         //var qry = _db.pro_order.Where(u => gdzOrderList.Contains(u.order_no)).AsEnumerable();
-        var qry = _db.pro_order.Where( u => u.activity_num == activity_num).AsEnumerable();
+        var qry = _db.pro_order.Where( u => u.activity_num == activity_num).OrderByDescending(o => o.reg_time);
-        
-        qry = qry.OrderByDescending(o => o.reg_time);
 
         var count = qry.Count(); //pageSize = count;//一次取回??
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 order_no = x.order_no,
                 f_num = x.f_num,
@@ -50,7 +50,7 @@ public class orderdetailController:ApiController
                         || u.actItem.subject.Contains("牌")
                         || !string.IsNullOrEmpty(u.f_num_tablet))
                 .Count(),
-                    actItem = x.pro_order_detail.Where(u => u.printed_files != null).FirstOrDefault()?.print_id }
+                    actItem = x.pro_order_detail.Where(u => u.printed_files != null).Select(u => u.print_id).FirstOrDefault() }
             }),
             count = count
         };

web/App_Code/api/stockController.cs

@@ -54,7 +54,7 @@ public class stockController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.stocks.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.stocks.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             var prod2 = prod.stock_files;
@@ -85,11 +85,11 @@ public class stockController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var getDelItem = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
-            var prod = _db.stocks.AsEnumerable().Where(q => getDelItem.Contains(q.num)).ToList();
+            var prod = _db.stocks.Where(q => getDelItem.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
-                var prod2 = _db.stock_files.AsEnumerable().Where(q => q.stock_num.HasValue && getDelItem.Contains(q.stock_num.Value)).ToList();
+                var prod2 = _db.stock_files.Where(q => q.stock_num.HasValue && getDelItem.Contains(q.stock_num.Value)).ToList();
                 if (prod2.Count() > 0)
                 {
                     publicFun publicFun = new publicFun();
@@ -114,7 +114,7 @@ public class stockController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.stock q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.stocks.AsEnumerable();
+        var qry = _db.stocks.AsQueryable();
        
         if (q.category.HasValue)
             qry = qry.Where(o => o.category == q.category.Value);
@@ -198,10 +198,12 @@ public class stockController : BaseApiController
             qry = qry.OrderByDescending(o => o.num);
 
         var tdesc = publicFun.enum_desc<Model.stock.type>();
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
 
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 category = x.category,
@@ -230,7 +232,7 @@ public class stockController : BaseApiController
                 price = x.price,
 
             }),
-            count = qry.Count()
+            count = count
 
         };
 
@@ -244,7 +246,7 @@ public class stockController : BaseApiController
     public IHttpActionResult GetKindList([FromBody] Model.ViewModel.stock_kind q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.stock_kind.AsEnumerable();
+        var qry = _db.stock_kind.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -293,7 +295,7 @@ public class stockController : BaseApiController
     public IHttpActionResult GetReasonList([FromBody] Model.ViewModel.stock_reason q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.stock_reason.AsEnumerable();
+        var qry = _db.stock_reason.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -335,15 +337,16 @@ public class stockController : BaseApiController
         if (q.stock_num.HasValue && q.stock_num.Value>0)
         {
             //檢查
-            var qry = _db.stock_files.AsEnumerable();
+            var qry = _db.stock_files.Where(o => o.stock_num == q.stock_num.Value);
-            qry = qry.Where(o => o.stock_num == q.stock_num.Value);
+            qry = qry.OrderByDescending(x => x.num);
-            qry.OrderByDescending(x => x.num);
 
+            var count = qry.Count();
+            var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
             int i = 1;
             //已有值
             var ret = new
             {
-                list = qry.ToPagedList(page, pageSize).Select(x => new
+                list = qryList.Select(x => new
                 {
                     id = i++,
                     num = x.num,
@@ -351,7 +354,7 @@ public class stockController : BaseApiController
                     pic1 = x.pic1,
                     pic1_name = x.pic1_name,
                 }),
-                count = qry.Count(),
+                count = count,
             };
 
             if (ret.list == null) throw new HttpResponseException(HttpStatusCode.NotFound);
@@ -466,7 +469,7 @@ public class stockController : BaseApiController
     [Route("api/stock/DeleteFilesItem/{id}")]//刪除相關檔案
     public void DeleteFilesItem(int id)
     {
-        var prod = _db.stock_files.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.stock_files.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             if (!string.IsNullOrEmpty(prod.pic1))

web/App_Code/api/supplierController.cs

@@ -50,7 +50,7 @@ public class supplierController : BaseApiController
     // DELETE api/<controller>/5
     public void Delete(int id)
     {
-        var prod = _db.suppliers.AsEnumerable().Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.suppliers.Where(q => q.num == id).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             if (!string.IsNullOrEmpty(prod.pic1))
@@ -80,8 +80,8 @@ public class supplierController : BaseApiController
     {
         if (!string.IsNullOrEmpty(nums))
         {
-            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s));
+            var ids = nums.TrimEnd(',').Split(',').Select(s => int.Parse(s)).ToList();
-            var prod = _db.suppliers.AsEnumerable().Where(q => ids.Contains(q.num)).ToList();
+            var prod = _db.suppliers.Where(q => ids.Contains(q.num)).ToList();
             if (prod.Count() > 0)
             {
                 publicFun publicFun = new publicFun();
@@ -113,7 +113,7 @@ public class supplierController : BaseApiController
     public IHttpActionResult GetList([FromBody] Model.ViewModel.supplier q, int page, int pageSize = 10,
      string sortBy = "", bool sortDesc = false)
     {
-        var qry = _db.suppliers.AsEnumerable();
+        var qry = _db.suppliers.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.u_name))
             qry = qry.Where(o => o.u_name.Contains(q.u_name.Trim()));
@@ -159,9 +159,12 @@ public class supplierController : BaseApiController
         else
             qry = qry.OrderByDescending(o => o.num);
 
+        var count = qry.Count();
+        var qryList = (pageSize > 0) ? qry.ToPagedList(page, pageSize).ToList() : qry.ToList();
+
         var ret = new
         {
-            list = qry.ToPagedList(page, pageSize).Select(x => new
+            list = qryList.Select(x => new
             {
                 num = x.num,
                 u_name = x.u_name,
@@ -176,7 +179,7 @@ public class supplierController : BaseApiController
                 }).ToList(), x.kind) : "",
 
             }),
-            count = qry.Count()
+            count = count
 
         };
 
@@ -192,7 +195,7 @@ public class supplierController : BaseApiController
     {
       
 
-        var qry = _db.supplier_kind.AsEnumerable();
+        var qry = _db.supplier_kind.AsQueryable();
 
         if (!string.IsNullOrEmpty(q.kind))         
             qry = qry.Where(o => o.kind.Contains(q.kind));
@@ -205,17 +208,18 @@ public class supplierController : BaseApiController
             range = o.range,
         }).OrderBy(x => x.root).ThenBy(x => x.kind).ToList(), 0, 0);
 
-
+        var count = qry.Count();
+        var qry2List = (pageSize > 0) ? qry2.ToPagedList(page, pageSize).ToList() : qry2.ToList();
 
         var ret = new
         {
-            list = qry2.ToPagedList(page, pageSize).Select(x => new
+            list = qry2List.Select(x => new
             {
                 num = x.num,
                 kind = new TreeView().RptDash(x.Level) + x.kind,            
 
             }),
-            count = qry.Count()
+            count = count
         };
       
 

web/App_Code/api/transfer_registerController.cs

@@ -237,7 +237,7 @@ public class transfer_registerController : ApiController
                 x.draft,
                 follower = x.f_num != null ? _db.followers
                     .Where(f => f.num == x.f_num)
-                    .AsEnumerable()
+                    .ToList()
                     .Select(f => new {
                         f.num,
                         f.u_name,
@@ -399,6 +399,7 @@ public class transfer_registerController : ApiController
     [Route("api/transfer_register/follower_orders")]
     public IHttpActionResult GetFollowerOrders(int f_num)
     {
+        // TODO: 優化建議 - 考慮加入分頁或日期範圍限制，避免單一信眾訂單過多時載入大量數據
         // 取得該信眾的所有訂單及明細，並關聯活動名稱與品項名稱
         var details = _db.pro_order
             .Where(o => o.f_num == f_num)
@@ -417,7 +418,7 @@ public class transfer_registerController : ApiController
                 d.demo,
                 reg_time = o.reg_time // 報名日期
             }))
-            .AsEnumerable()
+            .AsEnumerable()  // 只在需要內存計算前轉換
             .Select(x => new {
                 x.order_no,
                 x.activity_num,
@@ -481,7 +482,7 @@ public class transfer_registerController : ApiController
                 x.draft,
                 follower = x.f_num != null ? _db.followers
                     .Where(f => f.num == x.f_num)
-                    .AsEnumerable()
+                    .ToList()
                     .Select(f => new {
                         f.num,
                         f.u_name,
@@ -817,7 +818,7 @@ public class transfer_registerController : ApiController
                 tr.balance_act_item,
                 balance_actitem_name = tr.balance_act_item != null ? _db.actItems.Where(a => a.num == tr.balance_act_item).Select(a => a.subject).FirstOrDefault() : ""
             })
-            .AsEnumerable()
+            .ToList()
             .Select(tr => new
             {
                 tr.id,
@@ -1044,6 +1045,9 @@ public class transfer_registerController : ApiController
     [Route("api/transfer_register/activity_followers")]
     public IHttpActionResult GetActivityFollowers(int activity_num)
     {
+        // TODO: 性能優化 - 大型活動可能有數千筆訂單，建議：
+        // 1. 在數據庫層面先過濾出未完成沖帳項目（避免載入所有訂單）
+        // 2. 考慮加入 Take() 限制返回數量，或實作分頁
         // 查詢該法會中有報名單且有未完成沖帳項目的信眾
         var followers = _db.pro_order
             .Where(o => o.activity_num == activity_num)
@@ -1054,7 +1058,7 @@ public class transfer_registerController : ApiController
                 d.price,
                 paid = d.pro_order_record.Select(r => r.price).DefaultIfEmpty(0).Sum()
             }))
-            .AsEnumerable()
+            .AsEnumerable()  // 只在需要內存計算前轉換
             .Select(x => new {
                 x.f_num,
                 x.follower_name,
@@ -1104,7 +1108,7 @@ public class transfer_registerController : ApiController
                 d.demo,
                 reg_time = o.reg_time // 報名日期
             }))
-            .AsEnumerable()
+            .ToList()
             .Select(x => new {
                 x.order_no,
                 x.activity_num,

web/admin/HR/import.aspx.cs

@@ -130,7 +130,8 @@ public partial class admin_hr_import : MyWeb.config
             );
             sd2.AppendChild(tr);
             //查詢要匯出的資料
-            var list = _db.member_group.AsEnumerable().ToList();
+            // TODO: REVIEW - member_group 為固定少量資料表，ToList() 可接受
+            var list = _db.member_group.ToList();
             if (list.Count > 0)
             {
                 foreach (var item in list)
@@ -178,7 +179,8 @@ public partial class admin_hr_import : MyWeb.config
             );
             sd3.AppendChild(tr);
             //查詢要匯出的資料
-            var list2 = _db.member_title.AsEnumerable().ToList();
+            // TODO: REVIEW - member_title 為固定少量資料表，ToList() 可接受
+            var list2 = _db.member_title.ToList();
             if (list2.Count > 0)
             {
                 foreach (var item in list2)
@@ -229,10 +231,16 @@ public partial class admin_hr_import : MyWeb.config
                     startRowNumber += 1;
                 }
 
-                var fDt = _db.followers.AsEnumerable().ToList(); //信眾
+                // TODO: REVIEW - 整表載入性能評估：
-                var aDt = _db.admins.AsEnumerable().ToList(); //後台系統
+                // - followers (信眾) ⚠️ 會成長！若超過 1000 筆需優化為按需載入（先掃描 Excel 收集編號）
-                var gDt = _db.member_group.AsEnumerable().Select(x => x.num).ToList(); //組別
+                // - admins (管理員) ✓ 通常少量，ToList() 可接受
-                var tDt = _db.member_title.AsEnumerable().Select(x => x.num).ToList(); //職稱
+                // - member_group (組別) ✓ 固定少量，可接受
+                // - member_title (職稱) ✓ 固定少量，可接受
+                // 優化方案：先掃描 Excel → 只載入需要的編號 → 使用 Dictionary 加速查找（O(1) vs O(n)）
+                var fDt = _db.followers.ToList(); //信眾
+                var aDt = _db.admins.ToList(); //後台系統
+                var gDt = _db.member_group.Select(x => x.num).ToList(); //組別
+                var tDt = _db.member_title.Select(x => x.num).ToList(); //職稱
                 MyWeb.encrypt encrypt = new MyWeb.encrypt();
 
                 for (int currentRow = startRowNumber; currentRow <= endRowNumber; currentRow++)

web/admin/activity/itemKind.aspx.cs

@@ -21,7 +21,7 @@ public partial class admin_activity_itemKind : MyWeb.config
             if (!isStrNull(Request["num"]))
             {
                 int _num = Val(Request["num"]);
-                var prod = _db.actItem_kind.AsEnumerable().Where(q => q.num == _num).OrderBy(q => q.kind).FirstOrDefault();
+                var prod = _db.actItem_kind.Where(q => q.num == _num).OrderBy(q => q.kind).FirstOrDefault();
 
                 if (prod != null)
                 {
@@ -214,7 +214,7 @@ public partial class admin_activity_itemKind : MyWeb.config
 
         try
         {
-            var prod = _db.actItem_kind.AsEnumerable().Where(q => q.root == root).OrderByDescending(q => q.range).FirstOrDefault();
+            var prod = _db.actItem_kind.Where(q => q.root == root).OrderByDescending(q => q.range).FirstOrDefault();
             if (prod != null)
                 if (prod.range.HasValue)
                     range = prod.range.Value + 1;
@@ -252,7 +252,7 @@ public partial class admin_activity_itemKind : MyWeb.config
        
         int num = Val(Request["num"]);
         del_product(num);
-        var prod = _db.actItem_kind.AsEnumerable().Where(q => q.num == num).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.actItem_kind.Where(q => q.num == num).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
 
@@ -271,7 +271,7 @@ public partial class admin_activity_itemKind : MyWeb.config
 
     public void Del_Ohter_Items(int d_num)
     {
-        var prod = _db.actItem_kind.AsEnumerable().Where(q => q.root == d_num).ToList();
+        var prod = _db.actItem_kind.Where(q => q.root == d_num).ToList();
         if (prod.Count > 0)
         {
             foreach (var row in prod)
@@ -289,7 +289,7 @@ public partial class admin_activity_itemKind : MyWeb.config
 
     public void del_product(int num)
     {           
-        var prod = _db.actItems.AsEnumerable().Where(q => q.kind == num).ToList();
+        var prod = _db.actItems.Where(q => q.kind == num).ToList();
         if (prod.Count > 0)
         {
             //清空分類

web/admin/follower/index.aspx.cs

@@ -42,7 +42,7 @@ public partial class admin_follower_index : MyWeb.config
         //國籍
         s_country.Items.Clear();
         s_country.Items.Add(new ListItem("請選擇", ""));
-        var qry =_db.countries.AsEnumerable().OrderBy(x => x.range).ThenBy(x => x.name_en).ToList();
+        var qry =_db.countries.OrderBy(x => x.range).ThenBy(x => x.name_en).ToList();
         if (qry.Count > 0)
         { 
             foreach(var x in qry)           
@@ -222,7 +222,7 @@ public partial class admin_follower_index : MyWeb.config
     {
 
         //查詢要匯出的資料
-        var qry = _db.followers.AsEnumerable();
+        var qry = _db.followers.AsQueryable();
 
         //紀錄匯出條件
         if (!isStrNull(s_f_number.Value))

web/admin/follower/print.aspx.cs

@@ -25,7 +25,7 @@ public partial class admin_follower_print_ : System.Web.UI.Page
 
                 //紀錄匯出條件
                 string _query = "";
-                var qry = _db.followers.AsEnumerable();
+                var qry = _db.followers.AsQueryable();
                 if (!string.IsNullOrEmpty(Request["f_number"]))
                 {
                     qry = qry.Where(o => o.f_number.Contains(Request["f_number"].Trim()));
@@ -57,7 +57,7 @@ public partial class admin_follower_print_ : System.Web.UI.Page
                 if (!string.IsNullOrEmpty(Request["country"]))
                 {
                     qry = qry.Where(o => o.country == Request["country"]);
-                    _query += "國家:" + (_db.countries.AsEnumerable().Where(x => x.ID == Request["country"].ToString()).Select(x => x.name_zh).FirstOrDefault()??"" )+ "\n";
+                    _query += "國家:" + (_db.countries.Where(x => x.ID == Request["country"].ToString()).Select(x => x.name_zh).FirstOrDefault()??"" )+ "\n";
                 }
                 if (!string.IsNullOrEmpty(Request["country2"]))
                 {
@@ -70,7 +70,7 @@ public partial class admin_follower_print_ : System.Web.UI.Page
                         qry = qry.Where(o =>  o.country != "158");
 
                     }
-                    _query += "國家:" + (_db.countries.AsEnumerable().Where(x => x.ID == Request["country2"].ToString()).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
+                    _query += "國家:" + (_db.countries.Where(x => x.ID == Request["country2"].ToString()).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
                 }
                 
                 //管理報表

web/admin/news/news_reg.aspx.cs

@@ -27,7 +27,7 @@ public partial class admin_news_news_reg : MyWeb.config
             else
             {
                 int _num = Val(Request["num"]);
-                var qry = _db.news.AsEnumerable();
+                var qry = _db.news.AsQueryable();
                 //var prod = _db.news.Where(q => q.num == _num).ToList();
                 var prod = qry.Where(q => q.num == _num).FirstOrDefault();
 
@@ -410,13 +410,11 @@ public partial class admin_news_news_reg : MyWeb.config
     #region 載入
     protected void initNewsFiles(int num = 0)
     {
-        var qry = _db.news_files.AsEnumerable();
+        var qry = _db.news_files.AsQueryable();
         if (num > 0)
-            qry = qry.Where(q => q.news_id == num).ToList();
+            qry = qry.Where(q => q.news_id == num);
-        else
-            qry = qry.ToList();
 
-        fileRepeater.DataSource = qry;
+        fileRepeater.DataSource = qry.ToList();
         fileRepeater.DataBind();
     }
     protected void fileRepeater_ItemDataBound(object sender, RepeaterItemEventArgs e)

web/admin/order/index.aspx.cs

@@ -47,7 +47,7 @@ public partial class admin_order_index : MyWeb.config
         //國籍
         s_country.Items.Clear();
         s_country.Items.Add(new ListItem("請選擇", ""));
-        var qry = _db.countries.AsEnumerable().OrderBy(x => x.range).ThenBy(x => x.name_en).ToList();
+        var qry = _db.countries.OrderBy(x => x.range).ThenBy(x => x.name_en).ToList();
         if (qry.Count > 0)
         {
             foreach (var x in qry)
@@ -128,8 +128,8 @@ public partial class admin_order_index : MyWeb.config
             sd.AppendChild(tr);
 
             //查詢要匯出的資料
-            var aIDt = _db.actItems.AsEnumerable().Where(f => f.subject.Contains(s_actItemTxt.Value.Trim())).Select(f => f.num.ToString());//品項
+            var aIDt = _db.actItems.Where(f => f.subject.Contains(s_actItemTxt.Value.Trim())).Select(f => f.num.ToString());//品項
-            var qry = _db.pro_order.AsEnumerable();
+            var qry = _db.pro_order.AsQueryable();
 
             if (!isStrNull(s_order_no.Value))
                 qry = qry.Where(o => o.order_no.Contains(s_order_no.Value.Trim()));
@@ -154,7 +154,7 @@ public partial class admin_order_index : MyWeb.config
             MyWeb.encrypt encrypt = new MyWeb.encrypt();
             var tdesc = publicFun.enum_desc<Model.pro_order.detailKeyin1>();
 
-            var bedDt = _db.bed_order_detail.AsEnumerable();//掛單明細
+            var bedDt = _db.bed_order_detail.AsQueryable();//掛單明細
 
 
             //left join 使用 GroupJoin
@@ -167,7 +167,7 @@ public partial class admin_order_index : MyWeb.config
                     order_no = o.order_no,
                     up_time = o.up_time,
                     keyin1 = o.keyin1,
-                    f_num =  o.follower?.u_name, //姓名/名稱
+                    f_num = o.follower != null ? o.follower.u_name : "", //姓名/名稱
                     phone = o.phone,
                     activity_num = o.activity_num.HasValue ? o.activity.subject : "",
                     address = o.address,

web/admin/order/print.aspx.cs

@@ -25,7 +25,7 @@ public partial class admin_follower_print_ : System.Web.UI.Page
 
                 //紀錄匯出條件
                 string _query = "";
-                var qry = _db.pro_order.AsEnumerable();
+                var qry = _db.pro_order.AsQueryable();
                 if (!string.IsNullOrEmpty(Request["order_no"]))
                 {
                     qry = qry.Where(o => o.order_no.Contains(Request["order_no"].Trim()));
@@ -73,21 +73,21 @@ public partial class admin_follower_print_ : System.Web.UI.Page
                 }
                 if (!string.IsNullOrEmpty(Request["country"]))
                 {
-                    qry = qry.Where(o => o.f_num != null && o.follower?.country == Request["country"]);
+                    qry = qry.Where(o => o.f_num != null && o.follower.country == Request["country"]);
-                    _query += "國家:" + (_db.countries.AsEnumerable().Where(x => x.ID == Request["country"]).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
+                    _query += "國家:" + (_db.countries.Where(x => x.ID == Request["country"]).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
                 }
                 if (!string.IsNullOrEmpty(Request["country2"]))
                 {
                     if (Request["country2"] == "1")
                     {
-                        qry = qry.Where(o => o.f_num != null && o.follower?.country == "158");
+                        qry = qry.Where(o => o.f_num != null && o.follower.country == "158");
                     }
                     else if (Request["country2"] == "2")
                     {
-                        qry = qry.Where(o => o.f_num != null && o.follower?.country != "158");
+                        qry = qry.Where(o => o.f_num != null && o.follower.country != "158");
 
                     }
-                    _query += "國家:" + (_db.countries.AsEnumerable().Where(x => x.ID == Request["country2"]).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
+                    _query += "國家:" + (_db.countries.Where(x => x.ID == Request["country2"]).Select(x => x.name_zh).FirstOrDefault()??"") + "\n";
                 }
                 if (!string.IsNullOrEmpty(Request["hasPrice"]))
                 {
@@ -175,7 +175,7 @@ public partial class admin_follower_print_ : System.Web.UI.Page
                 }
 
                 if (!string.IsNullOrEmpty(Request["year"]))
-                    qry = qry.OrderByDescending(o => o.activity?.startDate_solar).ThenByDescending(o=>o.up_time).ThenByDescending(o=>o.order_no);
+                    qry = qry.OrderByDescending(o => o.activity != null ? o.activity.startDate_solar : null).ThenByDescending(o=>o.up_time).ThenByDescending(o=>o.order_no);
                 else
                     qry = qry.OrderByDescending(o => o.order_no);
 
@@ -186,8 +186,9 @@ public partial class admin_follower_print_ : System.Web.UI.Page
                     tdesc = publicFun.enum_desc<Model.pro_order.detailKeyin1>();
 
                     //明細
-                    _detail = _db.pro_order_detail.AsEnumerable().Where(x => prod.Select(o => o.order_no).Contains( x.order_no)).ToList();
+                    var orderNos = prod.Select(o => o.order_no).ToList();
-                    _bedDt = _db.bed_order_detail.AsEnumerable().Where(x => prod.Select(o => o.order_no).Contains( x.bed_order.order_no)).ToList();
+                    _detail = _db.pro_order_detail.Where(x => orderNos.Contains(x.order_no)).ToList();
+                    _bedDt = _db.bed_order_detail.Where(x => orderNos.Contains(x.bed_order.order_no)).ToList();
 
                     Repeater1.DataSource = prod;
                     Repeater1.DataBind();

web/admin/project/list.aspx.cs

@@ -39,9 +39,8 @@ public partial class admin_project_list : MyWeb.config
         //品項
         s_actItem_num.Items.Clear();
         s_actItem_num.Items.Add(new ListItem("請選擇", ""));
-        var qry = _db.actItems.AsEnumerable();
+        var qry = _db.actItems.Where(o => (int?)o.category==(int)Model.activity.category.Patronize);//贊助項目
-        qry = qry.Where(o => (int?)o.category==(int)Model.activity.category.Patronize);//贊助項目
+        qry = qry.OrderByDescending(o => o.num);
-        qry = qry.OrderByDescending(o => o.num).ToList();
         if(qry.Count() > 0)  
             foreach(var qq in qry)         
                 s_actItem_num.Items.Add(new ListItem(qq.subject, qq.num.ToString()));
@@ -99,7 +98,7 @@ public partial class admin_project_list : MyWeb.config
             sd.AppendChild(tr);
 
             //查詢要匯出的資料
-            var qry = _db.pro_order_detail.AsEnumerable();
+            var qry = _db.pro_order_detail.AsQueryable();
             qry = qry.Where(o => (int?)o.actItem.category == (int)Model.activity.category.Patronize);
 
             if (!string.IsNullOrEmpty(s_f_num.Value))
@@ -111,7 +110,8 @@ public partial class admin_project_list : MyWeb.config
             var list = qry.ToList();
             if (list.Count > 0)
             {
-                var projectDt = _db.projects.AsEnumerable(); //專案
+                // TODO: REVIEW - projects 資料量可能成長，若超過數千筆需優化為按需查詢
+                var projectDt = _db.projects.ToList(); //專案
                 foreach (var item in list)
                 {
                     var projects = from s in projectDt

web/admin/stock/reason_reg.aspx.cs

@@ -22,7 +22,7 @@ public partial class admin_stock_reason_reg : MyWeb.config
             if (!isStrNull(Request["num"]))
             {
                 int _num = Val(Request["num"]);
-                var prod = _db.stock_reason.AsEnumerable().Where(q => q.num == _num).OrderBy(q => q.kind).FirstOrDefault();
+                var prod = _db.stock_reason.Where(q => q.num == _num).OrderBy(q => q.kind).FirstOrDefault();
 
                 if (prod != null)
                 {
@@ -221,7 +221,7 @@ public partial class admin_stock_reason_reg : MyWeb.config
 
         try
         {
-            var prod = _db.stock_reason.AsEnumerable().Where(q => q.root == root).OrderByDescending(q => q.range).FirstOrDefault();
+            var prod = _db.stock_reason.Where(q => q.root == root).OrderByDescending(q => q.range).FirstOrDefault();
             if (prod != null)
                 if (prod.range.HasValue)
                     range = prod.range.Value + 1;
@@ -257,7 +257,7 @@ public partial class admin_stock_reason_reg : MyWeb.config
     {
        
         int num = Val(Request["num"]);
-        var prod = _db.stock_reason.AsEnumerable().Where(q => q.num == num).FirstOrDefault(); //刪除該筆資料
+        var prod = _db.stock_reason.Where(q => q.num == num).FirstOrDefault(); //刪除該筆資料
         if (prod != null)
         {
             _db.stock_reason.Remove(prod);
@@ -275,7 +275,7 @@ public partial class admin_stock_reason_reg : MyWeb.config
 
     public void Del_Ohter_Items(int d_num)
     {
-        var prod = _db.stock_reason.AsEnumerable().Where(q => q.root == d_num).ToList();
+        var prod = _db.stock_reason.Where(q => q.root == d_num).ToList();
         if (prod.Count > 0)
         {
             foreach (var row in prod)