一个IEWebControl TreeView右键菜单的例子，实现了添加、修改和删除功能，复制即可运行
更多TreeView的客户端操作参见
http://www.csdn.net/Develop/read_article.asp?id=22100
<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls, Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<HTML>
<HEAD>
<title>TreeView控件右键菜单</title>
<style>
<!--
.skin
{
cursor:default;
font:menutext;
position:absolute;
text-align:left;
font-family: Arial, Helvetica, sans-serif;
font-size: 10pt;
width:120px;
background-color:menu;
border:1 solid buttonface;
visibility:hidden;
border:2 outset buttonhighlight;
}
.menuitems
{
padding-left:15px;
padding-right:10px;
}
-->
</style>
</HEAD>
<body onclick="hideMenu()">
<form ;
var node = null;
function hideMenu()
{
popupMenu.style.visibility = "hidden";
}
function highlighItem()
{
if (event.srcElement.className == "menuitems")
{
event.srcElement.style.backgroundColor = "highlight";
event.srcElement.style.color = "white";
}
}
function lowlightItem()
{
if (event.srcElement.className == "menuitems")
{
event.srcElement.style.backgroundColor = "";
event.srcElement.style.color = "black";
window.status = "";
}
}
function clickItem()
{
if (event.srcElement.className == "menuitems")
{
if(event.srcElement.getAttribute("func") == "add" && node != null)
{
var newNode=TreeView1.createTreeNode();
newNode.setAttribute("Text","new Node");
node.add(newNode);
}
else if (event.srcElement.getAttribute("func") == "delete" && node != null)
{
node.remove();
}
else if (event.srcElement.getAttribute("func") == "modify" && node != null)
{
node.setAttribute("Text","hgknight");
}
}
}
function TreeView1.oncontextmenu()
{
var nodeindex = event.treeNodeIndex;
if (typeof(nodeindex) == "undefined")
{
node = null;
return;
}
node = TreeView1.getTreeNode(nodeindex);
var rightedge = document.body.clientWidth-event.clientX;
var bottomedge = document.body.clientHeight-event.clientY;
if (rightedge <popupMenu.offsetWidth)
{
popupMenu.style.left = document.body.scrollLeft + event.clientX - popupMenu.offsetWidth;
}
else
{
popupMenu.style.left = document.body.scrollLeft + event.clientX;
}
if (bottomedge <popupMenu.offsetHeight)
{
popupMenu.style.top = document.body.scrollTop + event.clientY - popupMenu.offsetHeight;
}
else
{
popupMenu.style.top = document.body.scrollTop + event.clientY;
}
popupMenu.style.visibility = "visible";
return false;
}
</script>
</body>
</HTML>