private void AddNewUser()
    {
        User user = new User();
        user.Full_Name = txtUserName.Value;
        user.Email_Address = txtEmailAddress.Value;
        user.Password = Common.GetHash(txtPassword.Value);
        user.Role_Code = int.Parse(ddlRole.SelectedValue);
        user.Package_Id = int.Parse(ddlPackage.SelectedValue);
        user.Created_Date = DateTime.Now;

        user.Is_Active = true;

        DataModelEntities entities = new DataModelEntities();
        entities.AddToUsers(user);
        entities.SaveChanges();

        BindUsers();
    }