最近做C#上傳，不過在使用HttpWebRequest時遇到了奇怪的超時問題，一時無法解決。

於是找找其他辦法，發現了RestSharp，快捷，好用，用法如下：

using RestSharp;

string url = "http://...";
string content = "..."; //要傳送的內容
string contentType = "application/json"; //Content-Type

try
{
    var client = new RestClient(url);
    var request = new RestRequest(Method.POST);
    request.Timeout = 10000;
    //request.AddHeader("Cache-Control", "no-cache");          
    request.AddParameter(contentType, content, ParameterType.RequestBody);

    IRestResponse response = client.Execute(request);
    return response.Content; //返回的結果
}
catch (Exception ex)
{
     return "連線伺服器出錯：\r\n" + ex.Message;
}