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。
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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 }显示文件夹