protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
drLop.DataSource = gvDAL.GetLop();
drLop.DataTextField = "TenLop";
drLop.DataValueField = "MaLop";
DataBind();
ddlmonhoc.DataSource = gvDAL.GetMonHoc();
ddlmonhoc.DataTextField = "TenMonHoc";
ddlmonhoc.DataValueField = "MaMonHoc";
DataBind();
}
}