CarRepairShop/CarRepairShopDatabaseImplement/Migrations/20240325173603_InitialCreate.Designer.cs

@@ -12,7 +12,7 @@ using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
 namespace CarRepairShopDatabaseImplement.Migrations
 {
     [DbContext(typeof(RepairsShopDatabase))]
-    [Migration("20240324163100_InitialCreate")]
+    [Migration("20240325173603_InitialCreate")]
     partial class InitialCreate
     {
         /// <inheritdoc />

CarRepairShop/CarRepairShopDatabaseImplement/Models/Order.cs

@@ -19,7 +19,7 @@ namespace CarRepairShopDatabaseImplement.Models
         public DateTime? DateImplement { get; private set; }
         [Required]
         public int RepairId { get; private set; }
-        public virtual Repair Repair { get; set; } = new();
+        public virtual Repair? Repair { get; set; }
 
         public static Order? Create(OrderBindingModel model)
         {
@@ -48,7 +48,7 @@ namespace CarRepairShopDatabaseImplement.Models
         public OrderViewModel GetViewModel => new()
         {
             RepairId = RepairId,
-            RepairName = Repair.RepairName,
+            RepairName = Repair?.RepairName ?? string.Empty,
             Count = Count,
             Sum = Sum,
             Status = Status,