Asp.net 2.0 Treeview 无限级无刷新示例

王朝asp·作者佚名  2008-05-31
窄屏简体版  字體: |||超大  

<%@ Page Language="C#" %>

<%@ Import Namespace="System.IO" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<script runat="server">

void Treeview1_TreeNodePopulate(object sender, TreeNodeEventArgs e)

{

if (IsCallback)

if (e.Node.ChildNodes.Count == 0)

{

LoadChildNode(e.Node);

}

}

private void LoadChildNode(TreeNode node)

{

DirectoryInfo directory;

directory = new DirectoryInfo(node.Value);

foreach (DirectoryInfo sub in directory.GetDirectories())

{

TreeNode subNode = new TreeNode(sub.Name);

subNode.Value = sub.FullName;

try

{

if (sub.GetDirectories().Length > 0 || sub.GetFiles().Length > 0)

{

subNode.SelectAction = TreeNodeSelectAction.SelectExpand;

subNode.PopulateOnDemand = true;

subNode.NavigateUrl = "#";

}

}

catch { subNode.ImageUrl = "WebResource.axd?a=s&r=TreeView_XP_Explorer_ParentNode.gif&t=632242003305625000"; }

node.ChildNodes.Add(subNode);

}

foreach (FileInfo fi in directory.GetFiles())

{

TreeNode subNode = new TreeNode(fi.Name);

node.ChildNodes.Add(subNode);

}

}

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >

<head runat="server">

<title>Untitled Page</title>

</head>

<body bgcolor="white">

<form id="form1" runat="server">

<div>

<asp:treeview ID="Treeview1" runat="server" ImageSet="XPFileExplorer" AutoGenerateDataBindings="false" ExpandDepth=0

OnTreeNodePopulate="Treeview1_TreeNodePopulate"

>

<SelectedNodeStyle BackColor="#B5B5B5"></SelectedNodeStyle>

<Nodes>

<asp:TreeNode Value="C:" Text="C:" PopulateOnDemand="true" SelectAction="Select" NavigateUrl="#" >

</asp:TreeNode>

</Nodes>

<NodeStyle VerticalPadding="2" Font-Names="Tahoma" Font-Size="8pt" HorizontalPadding="2"

ForeColor="Black"></NodeStyle>

<HoverNodeStyle Font-Underline="True" ForeColor="#6666AA"></HoverNodeStyle>

</asp:treeview>

</div>

</form>

</body>

</html>

 
 
 
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