本文實例講述了ASP.NET使用TreeView顯示文件的方法，是非常實用的技巧。分享給大家供大家參考。具體實現方法如下：
通常在ASP.NET中，TreeView的使用很普遍，這里詳細講述一下使用TreeView顯示文件的方法。
1.首先加入TreeView控件：
<asp:TreeView ID="driverInfoView" runat="server" ImageSet="XPFileExplorer" OnTreeNodePopulate="driverInfoView_TreeNodePopulate"> </asp:TreeView>
2.當頁面加載的時候,寫下以下代碼：
protected void Page_Load(object sender, EventArgs e) { foreach (DriveInfo driverInfo in DriveInfo.GetDrives()) { TreeNode newNode = new TreeNode(); newNode.Expanded = false; newNode.PopulateOnDemand = true; newNode.Value = driverInfo.Name; if (driverInfo.IsReady) { newNode.Text = driverInfo.Name + "(" + driverInfo.VolumeLabel + ")"; } else { newNode.Text = driverInfo.Name + "(還沒準備好)"; } this.driverInfoView.Nodes.Add(newNode); } } 3.設置TreeView節點的事件：
protected void driverInfoView_TreeNodePopulate(object sender, TreeNodeEventArgs e) { DirectoryInfo dictInfo = new DirectoryInfo(e.Node.Value); foreach (DirectoryInfo directory in dictInfo.GetDirectories()) { TreeNode newNode = new TreeNode(); newNode.Expanded = false; newNode.PopulateOnDemand = true; newNode.Text = directory.Name; newNode.Value = directory.FullName; e.Node.ChildNodes.Add(newNode); } foreach (FileInfo fileInfo in dictInfo.GetFiles()) { TreeNode newNode = new TreeNode(); newNode.Text = fileInfo.Name; newNode.Value = fileInfo.FullName; e.Node.ChildNodes.Add(newNode); } } 相信本文所述實例對大家的asp.net程序設計有一定的借鑒價值。
