protected void bt_OK_Click(object sender, EventArgs e)
    {
        BBS_CatalogBLL _catalogbll = null;

        if (bt_OK.Text == "添加")
        {
            _catalogbll = new BBS_CatalogBLL();
        }
        else
        {
            _catalogbll = new BBS_CatalogBLL((int)ViewState["ID"]);
        }

        UC_Catalog.GetData(_catalogbll.Model);

        if (bt_OK.Text == "添加")
        {
            ViewState["ID"] = _catalogbll.Add();
        }
        else
        {
            _catalogbll.Update();
        }
        MessageBox.ShowAndRedirect(this, "保存成功", "index.aspx");
    }
    private void BindData()
    {
        BBS_CatalogBLL bll = new BBS_CatalogBLL((int)ViewState["ID"]);

        UC_Catalog.BindData(bll.Model);

        bt_OK.Text      = "修改";
        bt_OK.ForeColor = System.Drawing.Color.Red;
    }