ASP.NET中使用TreeView显示文件的方法

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

当页面加载的时候,写下以下代码

protectedvoidPage_Load(objectsender,EventArgse)
{
foreach(DriveInfodriverInfoinDriveInfo.GetDrives())
{
TreeNodenewNode=newTreeNode();
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

protectedvoiddriverInfoView_TreeNodePopulate(objectsender,TreeNodeEventArgse)
{
DirectoryInfodictInfo=newDirectoryInfo(e.Node.Value);

foreach(DirectoryInfodirectoryindictInfo.GetDirectories())
{
TreeNodenewNode=newTreeNode();
newNode.Expanded=false;
newNode.PopulateOnDemand=true;
newNode.Text=directory.Name;
newNode.Value=directory.FullName;
e.Node.ChildNodes.Add(newNode);
}

foreach(FileInfofileInfoindictInfo.GetFiles())
{
TreeNodenewNode=newTreeNode();
newNode.Text=fileInfo.Name;
newNode.Value=fileInfo.FullName;
e.Node.ChildNodes.Add(newNode);
}
}