C# 文件读取(二)

将我的电脑中的文件夹信息显示到TreeView控件上。 方法很多种，下面这种方法添加了我的文档。

 1 public partial class Form1 : Form 2     { 3         public Form1() 4         { 5             InitializeComponent(); 6         } 7  8         PRivate void Form1_Load(object sender, EventArgs e) 9         {10             BindTreeView1();            11         }12 13         private void BindTreeView1() {14             //添加我的电脑15             TreeNode rootNode = new TreeNode("我的电脑");16             rootNode.Tag = "我的电脑";17             rootNode.Text = "我的电脑";18             this.directoryTree.Nodes.Add(rootNode);19 20             //我的文档21             string myDocuments = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);22             TreeNode DocNode = new TreeNode(myDocuments);23             DocNode.Text = "我的文档";24             DocNode.Tag = "我的文档";25             rootNode.Nodes.Add(DocNode);26             DocNode.Nodes.Add("");27 28             //循环便利计算机中所以的逻辑驱动器29             foreach (string drive in Environment.GetLogicalDrives())30             {31                 DriveInfo dir = new DriveInfo(drive);32                 switch (dir.DriveType)33                 {34                     case DriveType.Fixed:35                         TreeNode tNode = new TreeNode(dir.Name.Split(':')[0]);36                         tNode.Name = dir.Name;37                         tNode.Tag = tNode.Name;38                         directoryTree.Nodes.Add(tNode);39                         tNode.Nodes.Add("");40                         break;41                 }42             }43             rootNode.Expand();44         }45 46         private void directoryTree_AfterExpand(object sender, TreeViewEventArgs e)47         {48             e.Node.Expand();49         }50 51         private void directoryTree_BeforeExpand(object sender, TreeViewCancelEventArgs e)52         {53             TreeViewItems.Add(e.Node);54         }55     }56 57     public static class TreeViewItems {58 59         public static void Add(TreeNode e) {60         61             if(e.Tag.ToString() != "我的电脑"){62 63                 e.Nodes.Clear();64 65                 TreeNode tNode = e;66                 string path = tNode.Name;67 68                 if (e.Tag.ToString() == "我的文档")69                 {70                     path = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);71                 }72 73                string [] dics=  Directory.GetDirectories(path);74                 foreach (string dic in dics)75                 {76                     TreeNode subNode = new TreeNode(new DirectoryInfo(dic).Name);77                     subNode.Name = new DirectoryInfo(dic).FullName;78                     subNode.Tag = subNode.Name;79                     tNode.Nodes.Add(subNode);80                     subNode.Nodes.Add("");81                 }82             }83         }84     }