从树状

Question

删除父节点的标记：

<asp:TreeView ID="TreeView2" runat="server" ImageSet="Inbox" Width="200px"> 
          <ParentNodeStyle Font-Bold="True" /> 
          <HoverNodeStyle Font-Underline="True" ForeColor="#5555DD" /> 
          <SelectedNodeStyle Font-Underline="True" HorizontalPadding="0px" VerticalPadding="0px" 
           ForeColor="#5555DD" /> 
          <Nodes> 
           <asp:TreeNode Text="New Request" Value="Home" NavigateUrl="~/NewRequest.aspx" ToolTip="New Request"> 
           </asp:TreeNode> 
           <asp:TreeNode NavigateUrl="~/MyCertificates.aspx" Text="My Certificates" Value="Help" 
            ToolTip="My Certificates"></asp:TreeNode> 
            <asp:TreeNode NavigateUrl="~/MyRequest.aspx" Text="My Requests" Value="Help" 
            ToolTip="My Request"></asp:TreeNode> 
            <asp:TreeNode NavigateUrl="~/AdminRights.aspx" Text="Admin" Value="admin only" 
            ToolTip="Admin"></asp:TreeNode> 
           <asp:TreeNode NavigateUrl="~/Reneval.aspx"" 
            Text="Download Root Certificate" Value="RootCertificate" ToolTip="Download Root Certificate"> 
           </asp:TreeNode> 
          </Nodes> 
          <NodeStyle Font-Names="Calibri" Font-Size="8pt" ForeColor="DarkGray" HorizontalPadding="5px" 
           NodeSpacing="0px" VerticalPadding="0px" /> 
          <LeafNodeStyle ForeColor="Black" /> 
         </asp:TreeView> 

我试图取消对条件的节点管理员，但它是没有得到清除。

private void ShowAdminOptions() 
     { 

      TreeNode tnObj = TreeView2.FindNode("Admin"); 

      if (tnObj != null) 
      { 
       TreeView2.Nodes.Remove(tnObj); 
      } 
     } 

tnObj总是为空。

Answer 1

此行是错误的：

<asp:TreeNode NavigateUrl="~/AdminRights.aspx" Text="Admin" Value="admin only" 
           ToolTip="Admin"></asp:TreeNode> 

值应该是 “管理”，而不是 “只有管理员”。

TreeView.FindNode Method: Retrieves the TreeNode object in the TreeView control at the specified value path.