转载： ajax和c#.net相结合的树型菜单

此代码是从网上下载的资源，后经过修改
在此感谢原著作者

----------------------------web.config----------
<httpHandlers>
<add verb="POST,GET" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro" />
</httpHandlers>
--------------------------Tree.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Tree.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Ajax Efficient Tree</title>

</head>

<body>

<div>

<asp:Panel ID="Panel1" runat="server" Height="300px" Width="100px">

</asp:Panel>

var tree = document.getElementById("CategoryTree");//获取上面那个div的id名称

var root = document.createElement("li");

root.id = "li_0";

tree.appendChild( root );

ExpandSubCategory( 0 );

function ExpandSubCategory( categoryID )

{

var liFather = document.getElementById( "li_" + categoryID );

if( liFather.getElementsByTagName("li").length > 0)

{

ChangeStatus( categoryID );

return;

}

liFather.className = "Opened";

SwitchNode( categoryID, true );

//仅获取当前节点的子Nodes

_Default.GetSubCategory( categoryID, GetSubCategory_callback );

}

function SwitchNode( CategoryID, show )

{

var li_father = document.getElementById("li_" + CategoryID);

if( show )

{

var ul = document.createElement("ul");

ul.id = "ul_note_" + CategoryID;

var note = document.createElement("li");

note.className = "Child";

var img = document.createElement("img");

img.className = "s";

img.src = "css/s.gif";

var a = document.createElement("a");

a.href = "javascript:void(0);";

a.innerHTML = "Please waiting...";

note.appendChild(img);

note.appendChild(a);

ul.appendChild(note);

li_father.appendChild(ul);

}

else

{

var ul = document.getElementById("ul_note_" + CategoryID );

if( ul )

{

li_father.removeChild(ul);

}

function GetSubCategory_callback( response )

{

var dt = response.value.Tables[0];

if( dt.Rows.length > 0 )

{

var iCategoryID = dt.Rows[0].FatherID;

}

var li_father = document.getElementById("li_" + iCategoryID );

var ul = document.createElement("ul");

for( var i = 0; i < dt.Rows.length; i++ )

{

if( dt.Rows[i].IsChild == 1 )

{

var li = document.createElement("li");

li.className = "Child";

li.id = "li_" + dt.Rows[i].CategoryID;

var img = document.createElement("img");

img.id = dt.Rows[i].CategoryID;

img.className = "s";

img.src = "css/s.gif";

var a = document.createElement("a");

a.href = "javascript:OpenDocument('" + dt.Rows[i].CategoryID + "');";

a.innerHTML = dt.Rows[i].CategoryName;

}

else

{

var li = document.createElement("li");

li.className = "Closed";

li.id = "li_" + dt.Rows[i].CategoryID;

var img = document.createElement("img");

img.id = dt.Rows[i].CategoryID;

img.className = "s";

img.src = "css/s.gif";

img.onclick = function(){ ExpandSubCategory( this.id ); };

img.alt = "Expand/collapse";

var a = document.createElement("a");

a.href = "javascript:ExpandSubCategory('" + dt.Rows[i].CategoryID + "');";

a.innerHTML = dt.Rows[i].CategoryName;

}

li.appendChild(img);

li.appendChild(a);

ul.appendChild(li);

}

li_father.appendChild(ul);

SwitchNode( iCategoryID, false );

}

//单击叶节点时, 异步从服务端获取单个节点的数据.

function OpenDocument( CategoryID )

{

_Default.GetNameByCategoryID( CategoryID, GetNameByCategoryID_callback );

}

function GetNameByCategoryID_callback( response )

{

//alert( response.value );

//location.href="http://www.sohu.com";此处作了修改，能跳转到frameset的主页面

if(response.value=="修改密码")

window.open("http://www.sohu.com","main");

else if(response.value=="钢笔")

window.open("http://www.baidu.com","main");

}

function ChangeStatus( CategoryID )

{

var li_father = document.getElementById("li_" + CategoryID );

if( li_father.className == "Closed" )

{

li_father.className = "Opened";

}

else

{

li_father.className = "Closed";

}

</script>

</div>

</form>

</body>

</html>

--------------------Tree.aspx.cs------------

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page

{

//此对象用于存放所有的节点数

public static DataSet dsAllNodes = new DataSet();

protected void Page_Load(object sender, EventArgs e)

{

AjaxPro.Utility.RegisterTypeForAjax(typeof(_Default));

CreateNodes();

}

private DataTable CreateStructure()

{

DataTable dt = new DataTable();

dt.Columns.Ad

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posted on 2008-03-14 13:51 liufei 阅读(296) 评论(0) 编辑收藏举报