winform下载post提交产生的excel文件

[asdfku]

网页中点击按钮post提交到一个网址，然后弹出窗口提示网页下载excel文件，不知道这个excel文件的具体地址，如何在winform程序中下载这个excel文件？
麻烦给个方法或者思路，跪谢！！！

[nigerenz]

你直接在WINFROM中做，网页点击按钮的那个事件啊，点击按钮事件怎么做，你就修改下，也那样做啊，加一个浏览器控件。

[asdfku]

别人的网站。。。

部分代码：
protected virtual string GetPageByPost(string url, string postData,ref string responseCode)
{

Restart:
Stream outstream = null;
Stream instream = null;
StreamReader sr = null;
HttpWebResponse response = null;
HttpWebRequest request = null;
byte[] data = encoding.GetBytes(postData);

request = WebRequest.Create(url) as HttpWebRequest;
request.CookieContainer = cookieContainer;

request.AllowAutoRedirect = true;

request.Referer =url;
request.Method = HttpMethod.POST .ToString();
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent ="Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322)";
request.ContentLength = data.Length;
request.KeepAlive = true;
outstream = request.GetRequestStream();
outstream.Write(data,0,data.Length);
outstream.Close();

response = request.GetResponse() as HttpWebResponse;
instream = response.GetResponseStream();

response.Header中只能获取到excel的文件名，下面该怎么做？

[asdfku]

是通过程序自动下载，不是另存下载，高人们现身吧