本文实例讲述了ASP.NET使用TreeView显示文件的方法，是非常实用的技巧。分享给大家供大家参考。具体实现方法如下：
通常在ASP.NET中，TreeView的使用很普遍，这里详细讲述一下使用TreeView显示文件的方法。
1.首先加入TreeView控件：
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<asp:TreeView ID="driverInfoView" runat="server" ImageSet="XPFileExplorer" OnTreeNodePopulate="driverInfoView_TreeNodePopulate"> </asp:TreeView> |
2.当页面加载的时候,写下以下代码：
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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); } } |
3.设置TreeView节点的事件：
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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); } } |
相信本文所述实例对大家的asp.net程序设计有一定的借鉴价值。
