protected void ImageButtonUp_Click(object sender, ImageClickEventArgs e)
    {
        LabelErrorMessage.Text = "";
        dv = (DataView)SqlDataSourceDivision.Select(DataSourceSelectArguments.Empty);
        if (Ddlist.SelectedValue == "-1")
        {
            dv.RowFilter = "CompanyIDParent='0'";
        }
        else
        {
            dv.RowFilter = "CompanyID='" + Session["Pre"].ToString() + "'";
        }



        Ddlist.DataSource = dv;
        if (dv.Count > 0)
        {
            Session["Pre"]        = dv[0].Row[2].ToString();
            Ddlist.DataValueField = "CompanyID";
            Ddlist.DataTextField  = "CMPCompanyName";
            Ddlist.DataBind();
            Ddlist.Items.Insert(0, new ListItem("Select One", "-1"));
        }
        else
        {
            LabelErrorMessage.Text = "This is the last level";
        }
        Session["CompanyIdName"] = Ddlist.SelectedValue;
    }
 protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
         LabelErrorMessage.Text = "";
         dv = (DataView)SqlDataSourceCompany.Select(DataSourceSelectArguments.Empty);
         Ddlist.DataSource = dv;
         if (dv.Count > 0)
         {
             Ddlist.DataValueField = "CompanyID";
             Ddlist.DataTextField  = "CMPCompanyName";
             Ddlist.DataBind();
             Ddlist.Items.Insert(0, new ListItem("Select One", "-1"));
         }
         else
         {
             LabelErrorMessage.Text = "This is the last level";
         }
     }
 }