Исправление

FurnitureAssembly/FurnitureAssemblyDatabaseImplement/Implements/ShopStorage.cs

@@ -160,8 +160,11 @@ namespace FurnitureAssemblyDatabaseImplement.Implements
                     return null;
                 }
                 shop.Update(model);
-                context.SaveChanges();
-                shop.UpdateFurnitures(context, model);
+                if (model.Furnitures.Count > 0)
+                {
+                    shop.UpdateFurnitures(context, model);
+                }
+                context.SaveChanges();              
                 transaction.Commit();
                 return shop.GetViewModel;
             }