STAGE 3-4

web/App_Code/Model/Partial/order.cs

@@ -151,7 +151,7 @@ namespace Model
                                 .Where(q => q.actItem_num == this.actItem_num)  // 同品項
                                 .Where(q => q.print_id != null)  // Ensure print_id is not null
                                 .Select(q => q.print_id)  // Just select the print_id
-                                .AsEnumerable()  // Switch to in-memory operations
+                                .AsEnumerable()  // ✅ 合理使用：EF 無法轉換 StartsWith/Contains/Replace 到 SQL
                                 .Where(q => q.StartsWith(parent_print_id))  // Now do string operations in memory
                                 .Where(q => q.Contains(itemPrefix))
                                 .Select(q => q.Trim().Replace("\t", ""))