protected void Page_Load(object sender, EventArgs e)
 {
     if (Session["UserId"] == null)
     {
         Response.Redirect("../Login.aspx");
     }
     if (!IsPostBack)
     {
         ResetControls();
         ViewState["sortColumn"]    = "JVoucherDate";
         ViewState["sortDirection"] = gf.ConvertSortDirectionToSql(SortDirection.Descending);
         PopulateHeaderGrid(ViewState["sortColumn"].ToString(), ViewState["sortDirection"].ToString());
         ViewState["sortColumntransaction"]    = "Ledger Name";
         ViewState["sortDirectiontransaction"] = gf.ConvertSortDirectionToSql(SortDirection.Descending);
     }
 }