发送XML

[winsalau]

请问怎样向一个地址发送一个XML流(包)
最好简单点的,有些注解

[xiafish]

a.aspx
var x=new ActiveXObject("Microsoft.XMLHTTP");
x.open("post","www.aaa.com/aa.aspx",false);
x.send('<?xml version="1.0" encoding="GB2312"?><Root><Userid>'+userid+'</Userid></Root>');
if (x.status != 200)
{
alert(x.statusText);
}
else
{
try
{
eval(x.responseText);
}
catch(er)
{
alert(x.responseText);
}
}
aa.aspx.cs
private void Page_Load(object sender, System.EventArgs e)
{
XmlDocument d = new System.Xml.XmlDocument();
d.Load (Request.InputStream );
XmlNode UserID =d.SelectSingleNode ("//Userid");
userid=UserID.InnerText ;

}