//Bind Student Grid Data
        #region [Bind Student Grid Data]

        private void BindStudentGridData()
        {
            try
            {
                EWA_Common objEWA = new EWA_Common();
                BL_Common  objBL  = new BL_Common();

                objEWA.OrgId      = Session["OrgId"].ToString();
                objEWA.CourseId   = ddlCourse.SelectedValue.ToString();
                objEWA.BranchId   = ddlBranch.SelectedValue.ToString();
                objEWA.ClassId    = ddlClass.SelectedValue.ToString();
                objEWA.DivisionId = ddlDivision.SelectedValue.ToString();

                DataSet ds = objBL.BindStudentData_BL(objEWA);
                if (ds.Tables[0].Rows.Count != 0)
                {
                    GrdSender.DataSource = ds;
                    GrdSender.DataBind();
                    GrdSender.Columns[2].Visible = true;
                    dsGrdSender = ds.Copy();
                }
                else
                {
                    ShowEmptyGridView(GrdSender);
                }
            }
            catch (Exception exp)
            {
                GeneralErr(exp.Message.ToString());
            }
        }
        //Sender Changing
        #region [Sender Changing]

        protected void GrdSender_PageIndexChanging(object sender, GridViewPageEventArgs e)
        {
            try
            {
                GrdSender.PageIndex  = e.NewPageIndex;
                GrdSender.DataSource = dsGrdSender;
                GrdSender.DataBind();
            }
            catch (Exception exp)
            {
                GeneralErr(exp.Message.ToString());
            }
        }