C# Code:


/// <summary>
/// 客户端统一提交数据
/// </summary>
/// <param name="url">WebAPI核心URL地址</param>
/// <param name="param">URL参数</param>
/// <returns>返回数据</returns>
public static string Get(string url, string param, string contentType)
{
   try
   {
      
      System.Net.HttpWebRequest request;
      
      if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
      {
         ServicePointManager.SecurityProtocol = (SecurityProtocolType)192 | (SecurityProtocolType)768 | (SecurityProtocolType)3072;
         ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
         ServicePointManager.CheckCertificateRevocationList = false;
         ServicePointManager.DefaultConnectionLimit = 512;
         ServicePointManager.Expect100Continue = false;
         
         request = WebRequest.Create(url + (param == "" ? "" : "?") + param) as HttpWebRequest;
         request.ProtocolVersion = HttpVersion.Version10;
         request.KeepAlive = false;
      }
      else
      {
         request = (System.Net.HttpWebRequest)WebRequest.Create(url + (param == "" ? "" : "?") + param);
      }
      
      
      //request = (HttpWebRequest)WebRequest.Create(url + (param == "" ? "" : "?") + param);
      request.Method = "GET";
      request.ContentType = contentType;//text/html;charset=UTF-8;
      
      #region 获取网页内容太大的话,就加下面这两句代码
      request.Headers["Accept-Encoding"] = "gzip,deflate";
      request.AutomaticDecompression = DecompressionMethods.GZip;
      #endregion
      
      request.Timeout = WebApiTools.TimeOut;
      
      HttpWebResponse response = (HttpWebResponse)request.GetResponse();
      Stream myResponseStream = response.GetResponseStream();
      StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
      string retString = myStreamReader.ReadToEnd();
      myStreamReader.Close();
      myResponseStream.Close();
      
      return retString;
   }
   catch (WebException ex)
   {
      string result = "GET:操作失败！\r\n" + ex.Message;
      if (ex.Response != null)
      result = result + "\r\n" + GetResponseText(ex.Response);
      throw new Exception(result);
   }
   catch (Exception ex)
   {
      throw new Exception("GET:操作失败！\r\n" + ex.Message);
   }
}

//来源:C/S框架网(www.csframework.com) QQ:23404761

C# Code:

/// <summary>
/// 客户端统一提交数据
/// </summary>
/// <param name="url">WebAPI核心URL地址</param>
/// <param name="data">提交的数据</param>
/// <param name="contentType">指定request.ContentType</param>
/// <returns>返回数据</returns>
public static string Post(string url, string data, string contentType)
{
   string returnData = null;
   try
   {
      string strURL = url;
      System.Net.HttpWebRequest request;
      
      if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))
      {
         ServicePointManager.SecurityProtocol = (SecurityProtocolType)192 | (SecurityProtocolType)768 | (SecurityProtocolType)3072;
         ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
         ServicePointManager.CheckCertificateRevocationList = false;
         ServicePointManager.DefaultConnectionLimit = 512;
         ServicePointManager.Expect100Continue = false;
         
         request = WebRequest.Create(url) as HttpWebRequest;
         request.ProtocolVersion = HttpVersion.Version10;
         request.KeepAlive = false;
      }
      else
      {
         request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
      }
      
      request.Method = "POST";
      request.ContentType = contentType;// "application/json;charset=UTF-8";//POST必须使用JSON格式
      string paraUrlCoded = data;
      byte[] payload;
      payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
      request.ContentLength = payload.Length;
      request.Timeout = WebApiTools.TimeOut;
      Stream writer = request.GetRequestStream();
      writer.Write(payload, 0, payload.Length);
      writer.Close();
      System.Net.HttpWebResponse response;
      response = (System.Net.HttpWebResponse)request.GetResponse();
      System.IO.Stream s;
      s = response.GetResponseStream();
      string StrDate = "";
      string strValue = "";
      StreamReader Reader = new StreamReader(s, Encoding.GetEncoding("utf-8"));
      while ((StrDate = Reader.ReadLine()) != null)
      {
         strValue += StrDate + "\r\n";
      }
      returnData = strValue;
      return returnData.Trim() + "\n";
   }
   catch (WebException ex)
   {
      string result = "POST:操作失败！\r\n" + ex.Message;
      if (ex.Response != null)
      result = result + "\r\n" + GetResponseText(ex.Response);
      throw new Exception(result);
   }
   catch (Exception ex)
   {
      throw new Exception("POST:操作失败！\r\n" + ex.Message);
   }
}

private static string GetResponseText(WebResponse response)
{
   string text;
   using (StreamReader sr = new StreamReader(response.GetResponseStream()))
   {
      text = sr.ReadToEnd();
   }
   
   if ((response is HttpWebResponse))
   {
      int status = (int)(response as HttpWebResponse).StatusCode;
      if (status == 429) text = "流量访问限制!" + text;
   }
   
   return text;
}

//来源:C/S框架网(www.csframework.com) QQ:23404761