private void btnTimKiem_Click(object sender, EventArgs e)
{
gridKetQuaTimKiem.DataSource = GiangDay.SelectAll(GlobalSettings.UserID, rdKhoangThoiGian.Checked ? (DateTime?)dateTuNgay.Value : null,
rdKhoangThoiGian.Checked ? (DateTime?)dateDenNgay.Value : null, rdKhoaHoc.Checked ? cboKhoaHoc.SelectedValue.ToString() : null);
gridKetQuaTimKiem_Click(sender, e);
}
private void btnXemTatCa_Click(object sender, EventArgs e)
{
gridKetQuaTimKiem.DataSource = GiangDay.SelectAll(GlobalSettings.UserID, null, null, null);
gridKetQuaTimKiem_Click(sender, e);
}