protected void DataListBindGradeCheck()
{
DalOperationAboutGradeCheck dal = new DalOperationAboutGradeCheck();
if (ddlTermYear.SelectedValue.Trim() == "all")
{
dlstGradeCheck.DataSource = dal.GetAllGradeCheckItems().Tables[0];
dlstGradeCheck.DataBind();
}
else
{
dlstGradeCheck.DataSource = dal.GetGradeCheckItemsByTermYear(ddlTermYear.SelectedValue).Tables[0];
dlstGradeCheck.DataBind();
}
}