РАБОТАЕТ!!!!!!!!

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -52,7 +52,7 @@ namespace ComputersShopBusinessLogic.BusinessLogics
                 return false;
             }
             model.Status = newStatus;
-            if (model.Status == OrderStatus.Готов) model.DateImplement = DateTime.Now;
+            if (model.Status == OrderStatus.Готов) model.DateImplement = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
             else
             {
                 model.DateImplement = viewModel.DateImplement;

ComputersShop/ComputersShopContracts/BindingModels/OrderBindingModel.cs

@@ -15,7 +15,7 @@ namespace ComputersShopContracts.BindingModels
 		public int Count { get; set; }
 		public double Sum { get; set; }
 		public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
-		public DateTime DateCreate { get; set; } = DateTime.Now;
+		public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
 		public DateTime? DateImplement { get; set; }
 	}
 }

ComputersShop/ComputersShopDataBaseImplement/Implements/OrderStorage.cs

@@ -3,6 +3,7 @@ using ComputersShopContracts.SearchModels;
 using ComputersShopContracts.StoragesContracts;
 using ComputersShopContracts.ViewModels;
 using ComputersShopDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -24,7 +25,7 @@ namespace ComputersShopDataBaseImplement.Implements
 				context.Orders.Remove(element);
 				context.SaveChanges();
 
-				return element.GetViewModel;
+				return GetViewModel(element);
 			}
 
 			return null;
@@ -39,7 +40,7 @@ namespace ComputersShopDataBaseImplement.Implements
 
 			using var context = new ComputersShopDataBase();
 
-			return context.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+			return GetViewModel(context.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id)));
 		}
 
 		public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
@@ -51,31 +52,41 @@ namespace ComputersShopDataBaseImplement.Implements
 
 			using var context = new ComputersShopDataBase();
 
-			return context.Orders.Where(x => x.Id == model.Id).Select(x => x.GetViewModel).ToList();
+			return context.Orders.Where(x => x.Id == model.Id).Select(x => GetViewModel(x)).ToList();
 		}
 
 		public List<OrderViewModel> GetFullList()
 		{
 			using var context = new ComputersShopDataBase();
 
-			return context.Orders.Select(x => x.GetViewModel).ToList();
+			return context.Orders.Select(x => GetViewModel(x)).ToList();
 		}
 
 		public OrderViewModel? Insert(OrderBindingModel model)
 		{
 			var newOrder = Order.Create(model);
-
+			try
-			if (newOrder == null)
 			{
-				return null;
+				if (newOrder == null)
+				{
+					return null;
+				}
+
+				using var context = new ComputersShopDataBase();
+
+				context.Orders.Add(newOrder);
+				context.SaveChanges();
 			}
-
+			catch (DbUpdateException ex)
-			using var context = new ComputersShopDataBase();
+			{
-
+				var innerException = ex.InnerException;
-			context.Orders.Add(newOrder);
+				while (innerException != null)
-			context.SaveChanges();
+				{
-
+					Console.WriteLine(innerException.Message);
-			return newOrder.GetViewModel;
+					innerException = innerException.InnerException;
+				}
+			}
+			return GetViewModel(newOrder);
 		}
 
 		public OrderViewModel? Update(OrderBindingModel model)
@@ -92,7 +103,7 @@ namespace ComputersShopDataBaseImplement.Implements
 			order.Update(model);
 			context.SaveChanges();
 
-			return order.GetViewModel;
+			return GetViewModel(order);
 		}
 
 		private static OrderViewModel GetViewModel(Order order)