private void load_cboKhoiLop()
{
if (cboNamHoc.Text != "")
{
string maNamHoc = NAMHOC_BUS.LayNamHocHienTai().MANAMHOC;
cboKhoiLop.Properties.DataSource = KHOILOP_BUS.LayKhoiTheoNamHoc(maNamHoc);
cboKhoiLop.Properties.DisplayMember = "TENKHOI";
cboKhoiLop.Properties.ValueMember = "MAKHOI";
}
}
private void load_cboKhoiLop()
{
if (cboNamHoc.Text != "")
{
string maNamHoc = cboNamHoc.EditValue.ToString();
cboKhoiLop.Properties.DataSource = KHOILOP_BUS.LayKhoiTheoNamHoc(maNamHoc);
cboKhoiLop.Properties.DisplayMember = "TENKHOI";
cboKhoiLop.Properties.ValueMember = "MAKHOI";
}
}
//load_cboNamHocCu
private void load_cboKhoiLopCu1()
{
if (cboNamHocCu.Text != "")
{
string maNamHoc = cboNamHocCu.EditValue.ToString();
cboKhoiCu.Properties.DataSource = KHOILOP_BUS.LayKhoiTheoNamHoc(maNamHoc);
cboKhoiCu.Properties.DisplayMember = "TENKHOI";
cboKhoiCu.Properties.ValueMember = "MAKHOI";
//cboKhoiCu.EditValue = null;
}
else
{
cboKhoiCu.Properties.DataSource = null;
}
cboKhoiCu.EditValue = null;
}