Treeview 简单遍历，赋值，检查 checkbox

   

  protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            try
            {
                GenerateTree();
                erawarner.Model.Role model = BLL.RoleManager.GetRoleById(Convert.ToInt32(Common.EncodeInputString(Request.QueryString["id"])));
                lblRoleName.Text = model.frolename;
            }
            catch
            {
                Page.RegisterStartupScript("alert", "<script>alert('页面不能单独访问!')</script>");
            }
        }
    }

    private void BindTreeView(TreeNode passNode, bool isShowCheckBox)
    {
        IList<erawarner.Model.Menu> modelList = BLL.MenuManager.GetMenuByParentId(passNode.Value);

        IList<erawarner.Model.Roleright> modelListRight = new BLL.RoleRightManager().GetModelList(" froleid = " + Common.EncodeInputString(Request.QueryString["id"]));

        for (int i = 0; i < modelList.Count; i++)
        {
            TreeNode node = new TreeNode();
            node.Text = modelList[i].fmenuname;
            node.Value = modelList[i].fmenuid;
            node.NavigateUrl = "#";
            node.ShowCheckBox = isShowCheckBox;

            foreach (erawarner.Model.Roleright item in modelListRight) // 遍历用户与角色对应关系
            {
                if (item.fmenuid == node.Value) // 找到用户的菜单，那么勾选上
                {
                    node.Checked = true;
                    break;
                }
            }
            passNode.ChildNodes.Add(node); // 然后添加

            if (BLL.MenuManager.GetMenuByParentId(modelList[i].fmenuid).Count > 0)
            {
                BindTreeView(passNode.ChildNodes[passNode.ChildNodes.IndexOf(node)], isShowCheckBox);
            }
        }
    }

    private void GenerateTree()
    {
        tvMenu.Nodes.Clear();
        tvMenu.Nodes.Add(new TreeNode("目录", "-1"));
        BindTreeView(tvMenu.Nodes[0], true);
        tvMenu.ExpandAll();
    }

    protected void btnSubmit_Click(object sender, EventArgs e)
    {
        try
        {
            BLL.RoleRightManager.DeleteByRoleId(Convert.ToInt32(Common.EncodeInputString(Request.QueryString["id"])));
            erawarner.Model.Roleright model = new erawarner.Model.Roleright();

            for (int i = 0; i < tvMenu.CheckedNodes.Count; i++)
            {
                if (tvMenu.CheckedNodes[i].Checked)
                {
                    model.fmenuid = tvMenu.CheckedNodes[i].Value;
                    model.froleid = long.Parse(Request.QueryString["id"]);
                    BLL.RoleRightManager.AddRoleright(model);
                }
            }
            Page.RegisterStartupScript("alert", "<script>alert('分配成功!');window.location.href = 'RoleList.aspx'</script>");
        }
        catch
        {
            Page.RegisterStartupScript("alert", "<script>alert('分配过程中发生错误!')</script>");
        }
    }