如何从TreeNode.FullPath数据获取实际的treenode? [英] how to go from TreeNode.FullPath data and get the actual treenode?

问题描述

我想存储来自TreeNode.FullPath的一些数据，然后稍后我想重新扩展所有内容.有简单的方法吗?

I would like to store some data from TreeNode.FullPath and then later i would like to re-expand everything up to that point. Is there a simple way of doing it?

非常感谢！

推荐答案

您可以将其作为 TreeNodeCollection 的扩展方法编写:

You can write it as an extension method to the TreeNodeCollection:

using System;
using System.Linq;
using System.Windows.Forms;

namespace Extensions.TreeViewCollection
{
    public static class TreeNodeCollectionUtils
    {
        public static TreeNode FindTreeNodeByFullPath(this TreeNodeCollection collection, string fullPath, StringComparison comparison = StringComparison.InvariantCultureIgnoreCase)
        {
            var foundNode = collection.Cast<TreeNode>().FirstOrDefault(tn => string.Equals(tn.FullPath, fullPath, comparison));
            if (null == foundNode)
            {
                foreach (var childNode in collection.Cast<TreeNode>())
                {
                    var foundChildNode = FindTreeNodeByFullPath(childNode.Nodes, fullPath, comparison);
                    if (null != foundChildNode)
                    {
                        return foundChildNode;
                    }
                }
            }

            return foundNode;
        }
    }
}

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