How to define two classes for one DB table in MVC - asp.net-mvc

Question

I have one table np_user_dtls with 4 fields in sql server
user_name
user_last_name
arabic_name
nationality
In mvc i created a model class as below
public partial class np_user_dtls
{
[Display(Name = "First Name*")]
[Required(ErrorMessage = "First name is required.")]
public string user_name { get; set; }
[Required(ErrorMessage = "last name is required.")]
public string user_last_name { get; set; }
[Required(ErrorMessage = "arabic name is required.")]
public string arabic_name { get; set; }
[Required(ErrorMessage = "nationality is required.")]
public string nationality { get; set; }
}
and in context model i define the relationship between model class and db table as follow
public System.Data.Entity.DbSet<****.Models.np_user_dtls> np_user__dtls { get; set; }
now i need an another class in which arabic name is not mandatory
so i create a model like below
public partial class np_user_dtls_1
{
[Display(Name = "First Name*")]
[Required(ErrorMessage = "First name is required.")]
public string user_name { get; set; }
[Required(ErrorMessage = "last name is required.")]
public string user_last_name { get; set; }
[Required(ErrorMessage = "nationality is required.")]
public string nationality { get; set; }
}
but when i create an entry for this in db context like below
public System.Data.Entity.DbSet<****.Models.np_user_dtls_1> np_user__dtls { get; set; }
its giving me an error
The type ****.Models.***** already contains a definition for
np_user__dtls
is it not possible to define multiple model for a single table?

Answer 1

You can set one entity model for one table. then you can bind different view model with your entity model.
entity class.
public partial class np_user_dtls
{
public string user_name { get; set; }
public string user_last_name { get; set; }
public string arabic_name { get; set; }
public string nationality { get; set; }
}
you can use this class for database table.
public partial class np_user_dtls_response1
{
[Display(Name = "First Name*")]
[Required(ErrorMessage = "First name is required.")]
public string user_name { get; set; }
[Required(ErrorMessage = "last name is required.")]
public string user_last_name { get; set; }
[Required(ErrorMessage = "arabic name is required.")]
public string arabic_name { get; set; }
[Required(ErrorMessage = "nationality is required.")]
public string nationality { get; set; }
}
you can use this class as view model. accept request by this class. then map this class np_user_dtls and save information in db.
later you can use another view model class such as
public partial class np_user_dtls_response2
{
[Display(Name = "First Name*")]
[Required(ErrorMessage = "First name is required.")]
public string user_name { get; set; }
[Required(ErrorMessage = "last name is required.")]
public string user_last_name { get; set; }
[Required(ErrorMessage = "nationality is required.")]
public string nationality { get; set; }
}
bind this class again with class np_user_dtls and save information in db. In this you can use two kind of validation in application level save data in database. Previously you can set validation database level. thats why you cant set two class