fix 尝试清洗数据

Src/Dlhis.Canteen/Order/Request/OrderAddRequest.cs

@@ -50,8 +50,7 @@ public class OrderAddRequest : IValidatableObject
         //处理金额
         Amount = -Math.Abs(Amount);
 
-        //在线就以API时间为准
-        if (!IsOffline)
+        if (!CostDateTime.HasValue)
         {
             CostDateTime = DateTime.Now;
         }

Src/Dlhis.Canteen/Order/Request/UpdateOfflineRequest.cs

@@ -0,0 +1,7 @@
+namespace Dlhis.Canteen.Order.Request
+{
+    public class UpdateOfflineRequest
+    {
+        public string No { get; set; }
+    }
+}