asp.net中使用TreeView显示文件

在ASP.NET中,TreeView的使用很普遍,把它利用上来

首先加入TreeView控件

1. <asp:TreeViewID="driverInfoView"runat="server"ImageSet="XPFileExplorer"OnTreeNodePopulate="driverInfoView_TreeNodePopulate">
3. </asp:TreeView>

当页面加载的时候,写下以下代码

1. PRotectedvoidPage_Load(objectsender,EventArgse)
2. {
3. foreach(DriveInfodriverInfoinDriveInfo.GetDrives())
4. {
5. TreeNodenewNode=newTreeNode();
6. newNode.Expanded=false;
7. newNode.PopulateOnDemand=true;
8. newNode.Value=driverInfo.Name;
10. if(driverInfo.IsReady)
11. {
12. newNode.Text=driverInfo.Name+"("+driverInfo.VolumeLabel+")";
13. }
14. else
15. {
16. newNode.Text=driverInfo.Name+"(还没准备好)";
17. }
18. this.driverInfoView.Nodes.Add(newNode);
19. }
20. }

设置TreeView节点的事件

1. protectedvoiddriverInfoView_TreeNodePopulate(objectsender,TreeNodeEventArgse)
2. {
3. DirectoryInfodictInfo=newDirectoryInfo(e.Node.Value);
5. foreach(DirectoryInfodirectoryindictInfo.GetDirectories())
6. {
7. TreeNodenewNode=newTreeNode();
8. newNode.Expanded=false;
9. newNode.PopulateOnDemand=true;
10. newNode.Text=directory.Name;
11. newNode.Value=directory.FullName;
12. e.Node.ChildNodes.Add(newNode);
13. }
15. foreach(FileInfofileInfoindictInfo.GetFiles())
16. {
17. TreeNodenewNode=newTreeNode();
18. newNode.Text=fileInfo.Name;
19. newNode.Value=fileInfo.FullName;
20. e.Node.ChildNodes.Add(newNode);
21. }
22. }