UsersController

RentACar/Data/Data/RentACarDbContext.cs

@@ -20,7 +20,7 @@ namespace Data
         {
             if (!optionsBuilder.IsConfigured)
             {
-                optionsBuilder.UseSqlServer("Server=.;Database=RentACar;Integrated Security=true;");
+                optionsBuilder.UseSqlServer("Server=.\\SQLEXPRESS;Database=RentACar;Integrated Security=true;");
             }
         }
 

RentACar/Data/Models/Car.cs

@@ -9,6 +9,7 @@ namespace Data.Entities
 {
     public class Car
     {
+        [Required]
         public int Id { get; set; }
 
         [Required]

RentACar/Data/Models/Rents.cs

@@ -1,6 +1,7 @@
 using Microsoft.AspNetCore.Identity;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Linq;
 using System.Text;
@@ -11,10 +12,13 @@ namespace Data.Entities
     public class Rents
     {
         public int Id { get; set; }
+        [Required]
         [ForeignKey("Car")]
         public int CarId { get; set; }
         public virtual Car Car { get; set; }
+        [Required]
         public DateTime StartDate { get; set; }
+        [Required]
         public DateTime EndDate { get; set; }
         [ForeignKey("User")]
         public string UserId { get; set; }