protected void BtnSubmit_Click(object sender, EventArgs e)
    {
        obj_BAL_Student_Dashboard = new Student_DashBoard_BLogic();
        obj_Student_Dashboard     = new StudentDash();


        obj_Student_Dashboard.BMSID     = Convert.ToInt64(Session["BMSID"]);
        obj_Student_Dashboard.SubjectID = Convert.ToInt16(Session["SubjectID"]);
        obj_Student_Dashboard.StudentID = Convert.ToInt64(Session["StudentID"]);
        obj_Student_Dashboard.ChapterID = Convert.ToInt64(ddlChapter.SelectedValue);
        obj_Student_Dashboard.TopicID   = Convert.ToInt64(ddlTopic.SelectedValue);

        int result = obj_BAL_Student_Dashboard.BAL_Insert_Rescheduling_BMSSCT(obj_Student_Dashboard);

        if (result == ((int)EnumFile.AssignValue.One))
        {
            WebMsg.Show("Submit Query Successfully.");
            Applied_Chapter_Topics();
        }
        else if (result == ((int)EnumFile.AssignValue.Zero))
        {
            WebMsg.Show("This Chapter, Topic are allready requested for Rescheduling.");
        }

        DropDownList[] disddl3 = { ddlChapter, ddlTopic };
        DisableDropDwon(disddl3);

        DropDownList[] disddl = { ddlChapter };
        EnableDropDwon(disddl);
    }