public void LoadDocName()
    {
        try
        {
            Session["DocSearchDocNameList"] = BLLDocument.GetDocumentNameList(null, null, null);
            this.drpDocName.DataSource      = (List <ATTDocument>)Session["DocSearchDocNameList"];
            this.drpDocName.DataTextField   = "DocumentName";
            this.drpDocName.DataValueField  = "DocID";
            this.drpDocName.DataBind();

            ListItem a = new ListItem();
            a.Selected = true;
            a.Text     = "Select Document";
            a.Value    = "0";
            drpDocName.Items.Insert(0, a);
        }
        catch (Exception ex)
        {
            this.lblStatus.Text = ex.Message;
        }
    }
    public void LoadOrganisation()
    {
        try
        {
            Session["DocSearchOrgList"]         = BLLOrganization.GetOrganizationNameList();
            this.drpOrganisation.DataSource     = (List <ATTOrganization>)Session["DocSearchOrgList"];
            this.drpOrganisation.DataTextField  = "OrgName";
            this.drpOrganisation.DataValueField = "OrgId";
            this.drpOrganisation.DataBind();

            ListItem a = new ListItem();
            a.Selected = true;
            a.Text     = "Select Organisation";
            a.Value    = "0";
            drpOrganisation.Items.Insert(0, a);

            Session["DocSearchUnitList"]    = BLLOrganizationUnit.GetOrganizationUnits(null, null);
            Session["DocSearchDocNameList"] = BLLDocument.GetDocumentNameList(null, null, null);
        }
        catch (Exception ex)
        {
            lblStatus.Text = ex.Message;
        }
    }