MS Treeview控件：防止树视图中出现重复的noed [英] MS Treeview control : Prevent duplicate noed in treeview

问题描述

您好，我有一个在VS 2010中设计的树视图控件。我有一个root，parent（我称之为一个组）和一个child（Standalone hyper v或Cluster hyper v）。对于集群部分，我只想显示一个集群和另一个子集（与集群关联的主机）。



但在我的代码中，我添加了与主机关联的时间相同的群集。

例子



集群1

-------- noed1

集群1

- ------- noed2



我只需要展示。



群集1

--------- noed1

--------- noed2



我设法不创建第二个集群noed如果存在，但现在我不能添加noed2，我不知道为什么。



我的代码是：

Hello , I have a treeview control designed in VS 2010 . I have a root , parent ( i call a group ) and child ( Standalone hyper v or Cluster hyper v) . For the cluster part i only want to display one cluster and another child (the host(s) associated with the cluster) .

But in my code , i am adding the same cluster noed as many time as the host associated .
Exemple

Cluster 1
--------noed1
Cluster 1
---------noed2

I only need to show.

Cluster 1
---------noed1
---------noed2

I manage to not create the second cluster noed if exist but now i can't add the noed2 , i dont know why .

My code is :

SysWeb.TreeNode Clusternoed = Clustergroup;
Clusternoed = new SysWeb.TreeNode(Children);

                                if (output != "found")
                                {
                                    SysWin.MessageBox.Show("No cluster found for" + Children);
                                    group.ChildNodes.Add(Clustergroup);//---------->add cluster is working
                                    Clustergroup.ChildNodes.Add(Clusternoed); //---> add noed is working .
                                }
                                else
                                {

                                    SysWin.MessageBox.Show("Cluster found for :" + Children);
                                    //group.ChildNodes.Add(Clustergroup); dont add cluster but only children
                                    Clustergroup.ChildNodes.Add(Clusternoed); //--> not working 

                                }

如果我在其他情况下添加群集，它可以工作并添加noed2 到集群。但我不想两次拥有相同的群集名称。我需要显示如上所示..很多非常感谢你的帮助

If i add the cluster in else condition , it works and also add "noed2" to the cluster . But i dont wan t to have the same cluster name twice . I need to display as show above .. Many many thanks for your help

推荐答案

根据这个逻辑尝试一下。

Try something according to this logic.

// The method CheckIfClusterExist is your method and should return null if no cluster was found
TreeNode clusterFound = CheckIfClusterExist("ClusterName");
if (clusterFound == null)
{
    clusterFound = group.ChildNodes.Add(Clustergroup);
}
clusterFound.ChildNodes.Add(Clusternoed);

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