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IEWebControl TreeView右键菜单实例
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>

</style>
</HEAD>
<body onclick="hideMenu()">
<form id="TreeView" method="post" runat ="server">
<iewc:TreeView id="TreeView1" runat ="server" ExpandLevel="3" HoverStyle="color:blue;background:#ffff00;">
<iewc:TreeNode Text="Node0" Expanded="True">
<iewc:TreeNode Text="Node3">
<iewc:TreeNode Text="Node5"></iewc:TreeNode>
<iewc:TreeNode Text="Node6"></iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode Text="Node4"></iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode Text="Node1" Expanded="True">
<iewc:TreeNode Text="Node7">
<iewc:TreeNode Text="Node8"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
<iewc:TreeNode Text="Node2" Expanded="True">
<iewc:TreeNode Text="Node9"></iewc:TreeNode>
<iewc:TreeNode Text="Node10">
<iewc:TreeNode Text="Node11"></iewc:TreeNode>
<iewc:TreeNode Text="Node12"></iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeNode>
</iewc:TreeView>
<div id="popupMenu" class="skin" onMouseover="highlighItem()" onMouseout="lowlightItem()" onClick="clickItem()">
<div class="menuitems" func="add">添加</div>
<hr>
<div class="menuitems" func="delete">删除</div>
<div class="menuitems" func="modify">修改</div>
</div>
</form>
<script language="javascript">
var menuskin = "skin";
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>

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