protected void ddl_acyear_selectedindexchanged(object sender, EventArgs e) { ddl_semester.DataSource = P.BindERPSemester(Convert.ToString(ddl_acYear.SelectedItem.Text)); ddl_semester.DataValueField = "Semester_id"; ddl_semester.DataTextField = "Semester_name"; ddl_semester.DataBind(); ddl_semester.Items.Insert(0, "---Select---"); }