protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            if (e.CommandName == "Update")
            {
                int index = Convert.ToInt32(e.CommandArgument);
                Response.Redirect("UpdatePaymentType.aspx?id=" + index);
            }

            if (e.CommandName == "Delete_Payment")
            {
                int      index   = Convert.ToInt32(e.CommandArgument);
                Response respond = PaymentController.DeletePaymentType(index);
                if (respond.successStatus == false)
                {
                    alert.Text = respond.message;
                }
                else
                {
                    Response.Redirect("ViewPaymentType.aspx");
                }
            }
        }