BKI_DichVuMatDat.DanhMuc.F115_dm_thu_tu_don_vi_de.M_txt_stt_KeyPress C# (CSharp) Method

        private void M_txt_stt_KeyPress(object sender, KeyPressEventArgs e)
        {
            try
            {
                if (!Char.IsDigit(e.KeyChar) && !Char.IsControl(e.KeyChar))
                {
                    e.Handled = true;
                }
            }
            catch (Exception v_e)
            {

                CSystemLog_301.ExceptionHandle(v_e);
            }
        }