protected void grdInfo_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
{
if (txtCode.Text != "" || txtName.Text != "")
{
code = ViewState["code"].ToString();
name = ViewState["name"].ToString();
nimsal = ViewState["nimsal"].ToString();
dt = clsB.Show_Class_List_ByTerm(nimsal, Convert.ToInt32(code), name);
grdInfo.DataSource = dt;
}
}