исправления ошибок.

Shipyard/ShipyardFileImplement/Implements/ShopStorage.cs

@@ -9,6 +9,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using System.Xml.Linq;
 
 namespace ShipyardFileImplement.Implements
 {
@@ -75,13 +76,13 @@ namespace ShipyardFileImplement.Implements
         public ShopViewModel? Delete(ShopBindingModel model)
         {
             var shop = source.Shops.FirstOrDefault(x => x.Id == model.Id);
-            if (shop == null)
+            if (shop != null)
             {
-                return null;
+                source.Shops.Remove(shop);
+                source.SaveShops();
+                return shop.GetViewModel;
             }
-            shop.Update(model);
-            source.SaveShops();
-            return shop.GetViewModel;
+            return null;
         }
         public bool SellShips(IShipModel model, int count)
         {