c# - 将 TreeNodeCollection 转换为 List<TreeNode>

Question

如何转换 TreeNodeCollection至List<TreeNode> ？

这不起作用。

ICollection tnc = treeview1.Nodes;
ICollection<TreeNode> tn = (ICollection<TreeNode>)tnc;
List<TreeNode> list = new List<TreeNode>(tn);

异常:

Unable to cast object of type 'System.Windows.Forms.TreeNodeCollection' to type 'System.Collections.Generic.ICollection`1[System.Windows.Forms.TreeNode]'.

Answer 1

一种解决方案是:

List<TreeNode> treeNodeList = treeNodeCollection.OfType<TreeNode>().ToList();

另一个:

List<TreeNode> treeNodeList = treeNodeCollection.Cast<TreeNode>().ToList();

foreach 循环:

List<TreeNode> treeNodeList = new List<TreeNode>();
foreach (TreeNode item in treeNodeCollection)
    treeNodeList.Add(item);