private void grv_thongtintocao_DoubleClick(object sender, EventArgs e)
        {
            form_thongtintocao f = new form_thongtintocao();

            f.bool_sua = true;
            try
            {
                int i = (int)grv_thongtintocao.GetFocusedRowCellValue("id_thongtintocao1");
                f.id_thongtintocao = i;
                f.ShowDialog();
            }
            catch (Exception)
            {
                XtraMessageBox.Show("Vui lòng chọn đơn thư cần sửa");
            }
        }
        private void bar_sua_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            form_thongtintocao f = new form_thongtintocao();

            f.bool_sua = true;
            try
            {
                var y = grv_thongtintocao.GetFocusedRowCellValue("id_thongtintocao1");
                int i = (int)grv_thongtintocao.GetFocusedRowCellValue("id_thongtintocao1");
                f.id_thongtintocao = i;
                f.ShowDialog();
            }
            catch (Exception)
            {
                XtraMessageBox.Show("Vui lòng chọn đơn thư cần sửa");
            }
        }
        private void bar_them_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            form_thongtintocao f = new form_thongtintocao();

            f.ShowDialog();
        }