TravelCompany/TravelCompany/FormShop.cs

@@ -102,7 +102,6 @@ namespace TravelCompany.Forms
                     Adress = textBoxAdress.Text,
                     OpeningDate = dateTimeOpen.Value,
                     TravelMaxCount = (int)numericUpTravelMaxCount.Value,
-                    ShopTravels = null
             };
                 var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
                 if (!operationResult)

TravelCompany/TravelCompanyDatabaseImplement/Migrations/20240506091037_Initial-Create.Designer.cs

@@ -12,7 +12,7 @@ using TravelCompanyDatabaseImplement;
 namespace TravelCompanyDatabaseImplement.Migrations
 {
     [DbContext(typeof(TravelCompanyDataBase))]
-    [Migration("20240503064033_Initial-Create")]
+    [Migration("20240506091037_Initial-Create")]
     partial class InitialCreate
     {
         /// <inheritdoc />

TravelCompany/TravelCompanyDatabaseImplement/Models/Shop.cs

@@ -72,35 +72,29 @@ namespace TravelCompanyDatabaseImplement.Models
             ShopTravels = ShopTravels,
             TravelMaxCount = TravelMaxCount
         };
-
         public void UpdateTravels(TravelCompanyDataBase context, ShopBindingModel model)
         {
-            if (model.ShopTravels == null)
-                return;
-            var shopTravels = context.ShopTravels.Where(rec =>
-           rec.ShopId == model.Id).ToList();
-            if (shopTravels != null && shopTravels.Count > 0)
+            var ShopTravels = context.ShopTravels.Where(rec => rec.ShopId == model.Id).ToList();
+            if (ShopTravels != null && ShopTravels.Count > 0)
             {
-                context.ShopTravels.RemoveRange(shopTravels.Where(rec
-=> !model.ShopTravels.ContainsKey(rec.TravelId)));
-
+                context.ShopTravels.RemoveRange(ShopTravels.Where(rec => !model.ShopTravels.ContainsKey(rec.TravelId)));
                 context.SaveChanges();
-                foreach (var updateTravel in shopTravels)
+                ShopTravels = context.ShopTravels.Where(rec => rec.ShopId == model.Id).ToList();
+                foreach (var updateTravel in ShopTravels)
                 {
-                    updateTravel.Count =
-                   model.ShopTravels[updateTravel.TravelId].Item2;
+                    updateTravel.Count = model.ShopTravels[updateTravel.TravelId].Item2;
                     model.ShopTravels.Remove(updateTravel.TravelId);
                 }
                 context.SaveChanges();
             }
             var shop = context.Shops.First(x => x.Id == Id);
-            foreach (var pc in model.ShopTravels)
+            foreach (var ar in model.ShopTravels)
             {
                 context.ShopTravels.Add(new ShopTravels
                 {
                     Shop = shop,
-                    Travel = context.Travels.First(x => x.Id == pc.Key),
-                    Count = pc.Value.Item2
+                    Travel = context.Travels.First(x => x.Id == ar.Key),
+                    Count = ar.Value.Item2
                 });
                 context.SaveChanges();
             }