protected void BindStudents() { BEAdmin objBEAdmin = new BEAdmin(); BAdmin objBAdmin = new BAdmin(); objBEAdmin.IntCourseID = Convert.ToInt32(Request.QueryString["Courseid"].ToString()); objBAdmin.BGetStudentsNotInCourse(objBEAdmin); if (objBEAdmin.DtResult.Rows.Count > 0) { rcbStudent.AppendDataBoundItems = true; // rcbStudent.Items.Add(new RadComboBoxItem("--Select Student--", "-1")); rcbStudent.DataSource = objBEAdmin.DtResult; rcbStudent.DataTextField = "StudentName"; rcbStudent.DataValueField = "StudentID"; rcbStudent.DataBind(); } }