private int _SaveUpdate()
{
objUser.UserId = Convert.ToInt32(Session["UserId"].ToString());
objUser.FirstName = txt_FirstName.Text;
objUser.LastName = txt_LastName.Text;
objUser.Email = txtEmail.Text;
objUser.Address = txtAddress.Text;
objUser.Password = "";
return(objStudent.InsertUpdateStudent(objUser));
}