如何循环访问树视图
本文关键字:访问 视图 循环 何循环 | 更新日期: 2023-09-27 18:35:52
我有像 TreeView Web Control 这样的
1
1.1
2
2.1
2.1.1
2.1.1.1
2.1.1.2
3
3.1
3.1.1
如果我选中了 [复选框] 2.1.1.2 节点,我如何获得 2,2.1,2.1.1 和 2.1.1.2 这样的结果
我试图使用这个 http://msdn.microsoft.com/en-us/library/wwc698z7.aspx 的例子,但它没有给我所需的输出。任何帮助或说明如何实现所需的输出将不胜感激。
private void PrintRecursive(TreeNode treeNode)
{
// Print the node.
System.Diagnostics.Debug.WriteLine(treeNode.Text);
MessageBox.Show(treeNode.Text);
// Print each node recursively.
foreach (TreeNode tn in treeNode.ChildNodes)
{
PrintRecursive(tn);
}
}
// Call the procedure using the TreeView.
private void CallRecursive(TreeView treeView)
{
// Print each node recursively.
TreeNodeCollection nodes = treeView.CheckedNodes; // Modified to get the Checked Nodes
foreach (TreeNode n in nodes)
{
PrintRecursive(n);
}
}
var texts = new List<string> { treeNode.Text };
while (treeNode.Parent != null)
{
texts.Add(treeNode.Parent);
treeNode = treeNode.Parent;
}
//Reverse to get the required Layout of the Tree
texts.Reverse();
var result = string.Join("'r'n", texts);
或者,如果你想要父节点本身,从一级父节点到根父节点,包括 self:
var parents = new List<TreeNode> { treeNode };
while (treeNode.Parent != null)
{
parents.Add(treeNode.Parent);
treeNode = treeNode.Parent;
}
// Now parents contains the results. Do whatever you want with it.