public class Users
    {
        public int UserId { get; set; }
        public String Username { get; set; }
        public virtual ICollection<Role> Roles { get; set; }
}
public class Role
    {
        public int RoleId { get; set; }
        public string RoleName { get; set; }
        public virtual ICollection<Users> Users { get; set; }
    }

enum TypeofEmp{
            Admin=100,
            HttpRequest=101,
            Devoloper=102
    };
     public Users GetUsers(string Uname, string psw)
            {

                var x = (from n in db.Users
                        where n.Username == Uname && n.Password == psw
                        select n).FirstOrDefault();
                if(x!=null){
                    int RoleId = x.RoleId;
            var RoleNmae   =  Enum.GetName(typeof(TypeofEmp), RoleId);
            Role dd = new Role(); dd.RoleId = RoleId;  dd.RoleName = RoleNmae;
                }
                return x;