protected void Page_Load(object sender, EventArgs e)
    {
        Srl              = Session["StudentSrl"] as string;
        Term             = Session["TermSrl"] as string;
        ActivityGradeSrl = Convert.ToInt32(Request.QueryString["ActivityGradeSrl"]);
        EraeSrl          = Convert.ToInt32(Request.QueryString["EraeSrl"]);


        DataRow DesActivity = ActivityGrade.GetActivityGradeData(ActivityGradeSrl);

        MasterDescription.Text = DesActivity["Description"].ToString();
    }