c # post and get requests

// <Summary> 
/// send http post request
 ///  </ Summary> 
///  <param name = "URL"> address </ param> 
///  <param name = "Parameters"> query parameter set < / param> 
///  <Returns> </ Returns> 
public String CreatePostHttpResponse ( String URL, the IDictionary < String , String > Parameters) 
{ 
    the HttpWebRequest request = the WebRequest.Create (URL) AS the HttpWebRequest; // Create the request object 
    request.Method = " POST " ;// request method
    request.ContentType = "application/x-www-form-urlencoded";//链接类型
    //构造查询字符串
    if (!(parameters == null || parameters.Count == 0))
    {
        StringBuilder buffer = new StringBuilder();
        bool first = true;
        foreach (string key in parameters.Keys)
        {
 
            if (!first)
            {
                buffer.AppendFormat("&{0}={1}", key, parameters[key]);
            }
            else
            {
                buffer.AppendFormat("{0}={1}", key, parameters[key]);
                first = false;
            }
        }
        byte[] data = Encoding.UTF8.GetBytes(buffer.ToString());
        //写入请求流
        using (Stream stream = request.GetRequestStream())
        {
            stream.Write(data, 0, data.Length);
        }
    }
    return GetResponseString((HttpWebResponse)request.GetResponse());

 }

/// <summary> /// 发送http Get请求 /// </summary> 
/// <param name="url"></param> 
/// <returns></returns> 
public string CreateGetHttpResponse(string url) 
{ 
　　HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest; 
　　request.Method = "GET"; 
　　request.ContentType = "application/x-www-form-urlencoded";//链接类型 
　　return GetResponseString((HttpWebResponse)request.GetResponse()); 
} 

///  <Summary>  /// extracted from HttpWebResponse response data in the object into a string ///  </ Summary>  
///  <param name = "WebResponse"> </ param>  
///  <Returns> < / Returns>  
public  String GetResponseString (the HttpWebResponse WebResponse) 
{ 
　　the using (S = Stream WebResponse.GetResponseStream ()) 
   { 
　　　　the StreamReader Reader = new new the StreamReader (S, Encoding.UTF8); return reader.ReadToEnd (); 
   } 
}