c# - 我不知道如何将子节点添加到 TreeView

Question

这是我的代码:

public Form1()
{
    InitializeComponent();
    treeView1.Nodes.Add(new TreeNode("Graphic Requests"));
    if (TreeNodesList == null) TreeNodesList = new List<TreeNode>();
    TreeNodesList.Add(new TreeNode("Art Not Started"));
    TreeNodesList.Add(new TreeNode("Art In Progress"));
    TreeNodesList.Add(new TreeNode("Items To Accept/Modify"));
    TreeNodesList.Add(new TreeNode("Final Art Not Locked"));

    foreach (var node in TreeNodesList)
    {
        treeView1.Nodes.Add(node);
    }
}

我期望有一个父节点“图形请求”，其余节点作为子节点添加。但是，我的列表如下所示:

谁能告诉我我错过了什么？

Answer 1

您正在将节点添加到 treeView1，这就是它们成为父节点而不是子节点的原因。而是将它们添加到您添加的第一个节点。

试试这个:

public Form1()
{
   InitializeComponent();
   var parent = new TreeNode("Graphic Requests");

   TreeNodesList.Add(new TreeNode("Art Not Started"));
   TreeNodesList.Add(new TreeNode("Art In Progress"));
   TreeNodesList.Add(new TreeNode("Items To Accept/Modify"));
   TreeNodesList.Add(new TreeNode("Final Art Not Locked"));

   foreach (var node in TreeNodesList)
   {
       parent.Nodes.Add(node);
   }
   treeView1.Nodes.Add(parent);
}