Asp.net 2.0 Treeview无限级无刷新示例...

ShangShujie 2007-10-15

展开全文

Asp.net 2.0 Treeview无限级无刷新示例

开发者在线 Builder.com.cn 更新时间:2007-08-26作者：来源:天极网　

本文关键词： .NET

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

<%@ Import Namespace="System.IO" %> 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" 
            "http://www./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  

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./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>