完成 Batch 2：修復 4 個 API Controller 的 AsEnumerable 問題

修復文件（共 21 處）：

1. newsController.cs (7 處)
   - 移除簡單查詢的 AsEnumerable()
   - AsEnumerable() → AsQueryable() (GetList, GetKindList)
   - 優化分頁查詢模式（Count + ToPagedList.ToList()）
   - 修復 Split().Select().ToList() 類型問題

2. FilesSetController.cs (5 處)
   - 移除簡單查詢的 AsEnumerable()
   - AsEnumerable() → AsQueryable() (GetList)
   - 優化分頁查詢模式
   - 修復 files_num nullable 字段處理
   - 修復 Split().Select().ToList() 類型問題

3. bedController.cs (5 處)
   - 移除簡單查詢的 AsEnumerable()
   - AsEnumerable() → AsQueryable() (companies, bed_order_detail)
   - 優化分頁查詢模式
   - 簡化查詢條件

4. bed_kindController.cs (4 處)
   - AsEnumerable() → AsQueryable() (bed_kind, bed_kind_detail)
   - 優化分頁查詢模式（兩處）
   - 優化 bedDt 查詢：移除 AsEnumerable()，改用 Where + ToList()
   - 修復 bed_kind_detail_id nullable 字段處理

技術改進：
✓ 所有查詢改為在數據庫執行
✓ 統一使用三元運算符處理分頁
✓ Count 在分頁前執行
✓ 正確處理 nullable 字段（HasValue + .Value）
✓ IEnumerable<int> → List<int> 避免類型轉換錯誤

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
-            qry = qry.Where(o => !bedDt.ToArray().Contains(o.num.ToString()));
+            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.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)
         {