Microsoft教程创建包含ListView和TreeView控件的表单。 [英] Microsoft Tutorial To create the form containing a ListView and TreeView control.

问题描述

Private Sub PopulateTreeView()
        Dim rootNode As TreeNode
        Dim info As New DirectoryInfo("..\..")
        If info.Exists Then
            rootNode = New TreeNode(info.Name)
            rootNode.Tag = info
            GetDirectories(info.GetDirectories(), rootNode)
            TreeView1.Nodes.Add(rootNode)
        End If
End Sub

上面的代码来自教程，我的工作正常。

The above code comes from the tutorial, and I have it working fine.

但是我想更改一行： 

However I would like to change the line: 

Dim info As New DirectoryInfo("..\..")

要在树视图中显示完整的C驱动器，而不是部分选择，这会让我感觉到。

To show from the complete C drive in treeview, not the partial selection this gets me.

感谢您的帮助。

推荐答案

您好

构建文件资源管理器类型项目有很多例子 - Google'vb.net文件资源管理器示例'为某些t下降。

There are many many examples for building an File Explorer type project around - Google 'vb.net File Explorer example' for some of them.

通常，整个驱动器包含数千个文件，因此，最佳做法是对其进行组织，以便只有当用户打开文件夹的树节点时才会获取文件夹的文件。夹。否则，响应能力会受到严重影响。
考虑的其他事情是使用（比方说）BackGroundWorker来处理向TreeView提取/添加文件以保持UI响应。

Usually, a whole drive contains thousands of files and so, it is best practice to organize it so that the files for a folder are only fetched when user opens the Tree Node of the folder. Otherwise, responsiveness can be severely affected. Other things to consider is to use (say) a BackGroundWorker to deal with the fetching/adding files to the TreeView to keep the UI responsive.

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