ASP.NET中使用TreeView显示文件的方法
在ASP.NET中,TreeView的使用很普遍,把它利用上来
首先加入TreeView控件
<asp:TreeViewID="driverInfoView"runat="server"ImageSet="XPFileExplorer"OnTreeNodePopulate="driverInfoView_TreeNodePopulate"> </asp:TreeView>
当页面加载的时候,写下以下代码
protectedvoidPage_Load(objectsender,EventArgse) { foreach(DriveInfodriverInfoinDriveInfo.GetDrives()) { TreeNodenewNode=newTreeNode(); newNode.Expanded=false; newNode.PopulateOnDemand=true; newNode.Value=driverInfo.Name; if(driverInfo.IsReady) { newNode.Text=driverInfo.Name+"("+driverInfo.VolumeLabel+")"; } else { newNode.Text=driverInfo.Name+"(还没准备好)"; } this.driverInfoView.Nodes.Add(newNode); } }
设置TreeView节点的事件
protectedvoiddriverInfoView_TreeNodePopulate(objectsender,TreeNodeEventArgse) { DirectoryInfodictInfo=newDirectoryInfo(e.Node.Value); foreach(DirectoryInfodirectoryindictInfo.GetDirectories()) { TreeNodenewNode=newTreeNode(); newNode.Expanded=false; newNode.PopulateOnDemand=true; newNode.Text=directory.Name; newNode.Value=directory.FullName; e.Node.ChildNodes.Add(newNode); } foreach(FileInfofileInfoindictInfo.GetFiles()) { TreeNodenewNode=newTreeNode(); newNode.Text=fileInfo.Name; newNode.Value=fileInfo.FullName; e.Node.ChildNodes.Add(newNode); } }