C# HttpWebRequest 绝技

get方法

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 "";
}

post方法

///<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();
　　}
}