protected void insert_courses1(object sender, EventArgs e) { BLItem objBL = new BLItem(); string sectionID = dd1.SelectedItem.Text; string courseID = dd.SelectedValue; string teacherID = empID.Text; objBL.enter_teacher_courses(teacherID, courseID, sectionID); ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "alertMessage", "alert('Registration Is Successfull.')", true); }