/// <summary>
        ///This function is called when the delete button is clicked on the form and passes the DTO object to the bussiness layer.
        /// </summary>
        private void bttn_delete_Click(object sender, EventArgs e)
        {
            EmployeeBAL employeebalobj = new EmployeeBAL();

            employeebalobj.delete(add_to_DTOobj());
            MessageBox.Show("deleted sucessfully");
        }