protected void Button_submit_Click(object sender, EventArgs e) { SqlFuns sf = new SqlFuns(); Attendance tmp = new Attendance(); tmp.Course = uint.Parse(DropDownList_cos.SelectedValue); tmp.Student = uint.Parse(DropDownList_stu.SelectedValue); tmp.Date = DateTime.Parse(TextBox_dt.Text); int result = sf.AddAttendance(tmp); if (result > 0) { Response.Write("<script language='javascript'>alert('Success!!!');</script>"); } else { Response.Write("<script language='javascript'>alert('Failed!!!');</script>"); } }