изменил datamodels

CarCenter/CarCenterDataBaseImplement/Models/CompletionsCar.cs

@@ -11,11 +11,10 @@ namespace CarCenterDataBaseImplement.Models
     public class CompletionsCar
     {
         public int Id { get; set; }
-        public int CompletionsId { get; set; }
-        public int CarId { get; set; }
-
         [Required]
-        public int Count { get; set; }
+        public int CompletionsId { get; set; }
+        [Required]
+        public int CarId { get; set; }
         public virtual Completions Completion { get; set; } = new();
         public virtual CarSales Car { get; set; } = new();
     }

CarCenter/CarCenterDataModels/Models/ICarSalesModel.cs

@@ -11,6 +11,7 @@ namespace CarCenterDataModels.Models
         string CarBrand { get; }
         string CarModel { get; }
         decimal CarCost { get; }
-        int AdministratorId { get; }
+        DateTime DateCreate { get; }
+        // int AdministratorId { get; }
     }
 }

CarCenter/CarCenterDataModels/Models/IInspectionModel.cs

@@ -11,8 +11,7 @@ namespace CarCenterDataModels.Models
         string InspectionName { get; }
         decimal InspectionCost { get; }
         DateTime? InspectionDate { get; }
-        int AdministratorId { get; }
-        int EmployeeId { get; }
-        public Dictionary<int, ICarSalesModel> InspectionCars { get; }
+        //int AdministratorId { get; }
+        int? EmployeeId { get; }
     }
 }

CarCenter/CarCenterDataModels/Models/IСompletionsModel.cs

@@ -11,7 +11,6 @@ namespace CarCenterDataModels.Models
         string СompletionName { get; }
         string СompletionFeatures { get; }
         decimal СompletionPrice { get; }
-        int AdministratorId { get; }
-        public Dictionary<int, ICarSalesModel> СompletionCars { get; }
+       // int AdministratorId { get; }
     }
 }