在ASP.NET中,TreeView的使用很普遍,把它利用上來(lái)

首先加入TreeView控件

<asp:TreeView ID="driverInfoView" runat="server" ImageSet="XPFileExplorer" OnTreeNodePopulate="driverInfoView_TreeNodePopulate"></asp:TreeView>

當(dāng)頁(yè)面加載的時(shí)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(zhǔn)備好)"; } this.driverInfoView.Nodes.Add(newNode); } }

設(shè)置TreeView節(jié)點(diǎn)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); }}