protected void btnAssociate_Click(object sender, EventArgs e)
        {
            Page.Validate();

            if (Page.IsValid)
            {
                string associateCategory = tvCategoriesRoot.SelectedNode.Text;
                int libraryCategoryId = int.Parse(tvCategoriesRoot.SelectedNode.Value);

                ServiceRequestsManagerToolBasicInformation serviceRequestsManagerToolBasicInformation = new ServiceRequestsManagerToolBasicInformation(serviceRequestsManagerToolTDS);
                serviceRequestsManagerToolBasicInformation.UpdateLibraryCategoriesId(int.Parse(ViewState["serviceId"].ToString()), libraryCategoryId);

                Session["serviceRequestsManagerToolTDS"] = serviceRequestsManagerToolTDS;

                Response.Write("<script language='javascript'> {window.close();}</script>");
            }
        }
        protected void btnUnassociate_Click(object sender, EventArgs e)
        {
            SaveTemp();
            PostPageChanges();

            ServiceRequestsManagerToolBasicInformation serviceRequestsManagerToolBasicInformation = new ServiceRequestsManagerToolBasicInformation(serviceRequestsManagerToolTDS);
            serviceRequestsManagerToolBasicInformation.UpdateLibraryCategoriesId(int.Parse(hdfSelectedSRId.Value), null);

            ViewState["update"] = "no";

            btnUnassociate.Visible = false;
            btnAssociate.Visible = true;
            tbxCategoryAssocited.Text = "";
        }