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:TreeView ID="driverInfoView" runat="server" ImageSet="XPFileExplorer" OnTreeNodePopulate="driverInfoView_TreeNodePopulate"> </asp:TreeView>
当页面加载的时候,写下以下代码
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 + "(还没准备好)"; } this.driverInfoView.Nodes.Add(newNode); } }
设置TreeView节点的事件
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); } }
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