C# 获取页面上内容

用ajax通道试试吧`.

<script language="javascript">
var s = GetDataFromXMLHTTP("http://www.3322.org/dyndns/getip");
document.write(s);

function GetDataFromXMLHTTP(sFile)
{
var rdNum = Math.random();
var oHTTP = new ActiveXObject("Msxml2.XMLHTTP");

var sUrl = sFile + "?rdnum=" + rdNum;

oHTTP.open( "GET", sUrl, false);
oHTTP.send();

var bSuccess = handleXMLErr(oHTTP.responseXML);
if (bSuccess)
{
if(oHTTP.responseText=="服务器超时") window.navigate("/ErrPage.aspx?errid=001");
return oHTTP.responseText;
}
else
{
alert("取数失败，请与系统管理员联系！");
return "-1";
}
}

function handleXMLErr(xml, bContinue)
{
if (bContinue == null) bContinue = false;