1 var obj = new Object(); 
2 obj.name="name"; 
3 var rtnValue=window.showModalDialog("child.aspx",obj,"dialogWidth:500px;dialogHeight:300px;status:no;scrollbars=yes;help:no");
4 if(rtnValue=="ok"){
5     window.location.reload();//刷新父页面
6 }

1 ①前台（.aspx）:
2 <script type="text/javascript">
3     var obj = window.dialogArguments;//获取父页面传值(alert("您传递的参数为：" + obj.name))
4     window.returnValue="ok";//向父页面传值
5     close();//关闭子页面
6 </script>
7 ②后台（.aspx.cs）：
8 Response.Write("<script type=‘text/javascript‘>window.returnValue=‘ok‘;close();</script>");