递归创建树节点方法 选中权限值

     public void CreateNode(TreeNode tn, List<RolePermissionEntity> list)
        {
            foreach (RolePermissionEntity rp in list)
            {
                TreeNode tnd = new TreeNode(rp.PermissionName,rp.PermissionCode);
                tnd.Checked = rp.HasPermission == 1;
                tn.ChildNodes.Add(tnd);
                var listChild = (from tab in listAll where tab.ParentPermissionCode == rp.PermissionCode select tab).ToList<RolePermissionEntity>();
                if (listChild != null)
                {
                    CreateNode(tnd,listChild);
                }
              
            }
        }

           List<RolePermissionEntity> listAll = new List<RolePermissionEntity>();
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!Page.IsPostBack)
            {
                InitTreeData();
            }
        }
        public void InitTreeData()

        {
            this.TreeView1.Nodes.Add(new TreeNode() { Text="根",Value="001"});
            listAll.Add(new RolePermissionEntity() { PermissionCode = "10000", PermissionName = "员工管理", ParentPermissionCode = "0", HasPermission = 1 });
            listAll.Add(new RolePermissionEntity() { PermissionCode = "11000", PermissionName = "员工管理001", ParentPermissionCode = "10000", HasPermission = 0 });
            listAll.Add(new RolePermissionEntity() { PermissionCode = "11100", PermissionName = "员工管理0001", ParentPermissionCode = "11000", HasPermission = 0 });
            listAll.Add(new RolePermissionEntity() { PermissionCode = "10001", PermissionName = "企业管理", ParentPermissionCode = "0", HasPermission = 1 });
            listAll.Add(new RolePermissionEntity() { PermissionCode = "10002", PermissionName = "薪资管理", ParentPermissionCode = "0", HasPermission = 1 });
            var parentList =  (from tab in listAll where tab.ParentPermissionCode=="0" select  tab).ToList<RolePermissionEntity>();
            CreateNode(TreeView1.Nodes[0], parentList);
        }
        public void CreateNode(TreeNode tn, List<RolePermissionEntity> list)
        {
            foreach (RolePermissionEntity rp in list)
            {
                TreeNode tnd = new TreeNode(rp.PermissionName,rp.PermissionCode);
                tnd.Checked = rp.HasPermission == 1;
                tn.ChildNodes.Add(tnd);
                var listChild = (from tab in listAll where tab.ParentPermissionCode == rp.PermissionCode select tab).ToList<RolePermissionEntity>();
                if (listChild != null)
                {
                    CreateNode(tnd,listChild);
                }
               
            }
        }
       
    }
}