C# HttpWebRequest 绝技

public static string GetUrltoHtml(string Url,string type)

{

try

{

System.Net.WebRequest wReq = System.Net.WebRequest.Create(Url);

// Get the response instance.

System.Net.WebResponse wResp = wReq.GetResponse();

System.IO.Stream respStream = wResp.GetResponseStream();

// Dim reader As StreamReader = New StreamReader(respStream)

using (System.IO.StreamReader reader = new System.IO.StreamReader(respStream, Encoding.GetEncoding(type)))
{
return reader.ReadToEnd();
}

}

catch (System.Exception ex)

{

//errorMsg = ex.Message;

}

return "";

}

///<summary>

///采用https协议访问网络

///</summary>

///<param name="URL">url地址</param>

///<param name="strPostdata">发送的数据</param>

///<returns></returns>

public string OpenReadWithHttps(string URL, string strPostdata, string strEncoding)

{

Encoding encoding = Encoding.Default;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL);

request.Method = "post";

request.Accept = "text/html, application/xhtml+xml, */*";

request.ContentType = "application/x-www-form-urlencoded";

byte[] buffer = encoding.GetBytes(strPostdata);

request.ContentLength = buffer.Length;

request.GetRequestStream().Write(buffer, 0, buffer.Length);

HttpWebResponse response = (HttpWebResponse)request.GetResponse();

using( StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.GetEncoding(strEncoding)))
{

return reader.ReadToEnd();
}

}