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：

<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：

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：

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。