C#应用程序与Web页面交互问题

[qing6454]

请问各位：
如何使用C#应用程序抓取指定页面？并且可以在应用程序中填入页面表单项信息，随后通过应用程序提交http请求。谢谢！
高分！

[Anakin_Skywalker]

HttpRequest

[Anakin_Skywalker]

HttpRequest

[cqq]

可以试试 webbrwoser 控件

[qing6454]

谢谢二楼，我只知道HttpRequest可以抓取页面html代码，请问如何向页面发送信息？（比如提交）

[烈火蜓蜻]

HttpRequest

正解

[qing6454]

三楼可以说得详细一点吗？谢谢！

[wuyq11]

HttpRequest获取网站信息
WebClient提交ASP.NET页面表单
参考
http://www.cnblogs.com/anjou/archive/2006/12/25/602943.html
http://www.cnblogs.com/kokoliu/archive/2006/08/16/478758.html
http://www.cnblogs.com/goody9807/archive/2008/07/18/1246058.html

[wangping_li]

private string SendPostData(string path, string strhtml)
        {
            HttpWebRequest httprequest = (HttpWebRequest)WebRequest.Create(path);

            httprequest.Method = "POST";
            httprequest.ContentLength = strhtml.Length;
            httprequest.ContentType = "application/x-www-form-urlencoded"; 
            Stream httprequeststream = httprequest.GetRequestStream();
            StreamWriter sw = new StreamWriter(httprequeststream);
            sw.Write(strhtml);
            sw.Close();
            HttpWebResponse httpresponse = (HttpWebResponse)httprequest.GetResponse();
            StreamReader sr = new StreamReader(httpresponse.GetResponseStream(), Encoding.Default);
            string backstr = sr.ReadToEnd();
            sr.Close();
            httpresponse.Close();
            return backstr;
        }

[wangping_li]

用webbrwoser 可以调用上面这个方法