C# treeview 使用筆記

treeView默認 展開

treeView1.ExpandAll();

treeview判斷點擊節點：

private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (treeView1.SelectedNode.Name == "節點名")
            { 
                frm_cluster.ShowDialog();
            }
｝

 treeview 點擊已經選過的節點如何觸發事件:

  private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (treeView1.SelectedNode.Name == "cluster")
            {
                frm_cluster.ShowDialog();
            }
            treeView1.SelectedNode = null;
        }

在AfterSelect事件的末尾處，添加：treeView1.SelectedNode = null;