Model is not valid in the edit time in asp.net MVC

[Table("tblUser")]

public class User

{

[Key]

public int Id { get; set; }

public string FirstName { get; set; }

[Required]

[EmailAddress(ErrorMessage = "Invalid Email Address")]

public string Email { get; set; }

[Required]

public string Password { get; set; }

[NotMapped]

[Display(Name = "Confirm password")]

[Compare("Password", ErrorMessage = "The password and confirmation password do not match.")]

public string ConfirmPassword { get; set; }

public string Salt { get; set; }

[ForeignKey("Role")]

public int RoleId { get; set; }

public Role Role { get; set; }

[ForeignKey("Department")]

public int DepartmentId { get; set; }

public Department Department { get; set; }

}

 

Confirm password, i do not want to store in the database so i given [NotMapped] 

 

i think here is the main problem ... because their is no problem in the time of user creation , but when im trying to edit those user that it is not updating , the control is not going inside of 

}

 

, in the edit time from the view i remove Password , ConfirmPassword ,Salt because i dont want to edit this three field , may be because of that this model is not valid in the time of edit .

 

here is the code 

 

 

i do not know exactly why error is coming always please someone help me !