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。
