System.Net.WebException：操作已超时

我有一个大问题：我需要一次发送 200 个对象并避免超时。

while (true)
{

    NameValueCollection data = new NameValueCollection();
    data.Add("mode", nat);

    using (var client = new WebClient())
    {
        byte[] response = client.UploadValues(serverA, data);
        responseData = Encoding.ASCII.GetString(response);

        string[] split = Javab.Split(new[] { '!' },  StringSplitOptions.RemoveEmptyEntries);
        string command = split[0];
        string server = split[1];
        string requestCountStr = split[2];

        switch (command)
        {
            case "check":
                int requestCount = Convert.ToInt32(requestCountStr);

                for (int i = 0; i < requestCount; i++)
                {
                    Uri myUri = new Uri(server);
                    WebRequest request = WebRequest.Create(myUri);
                    request.Timeout = 200000;
                    WebResponse myWebResponse = request.GetResponse();
                }
                break;
        }
    }    
}

这会产生错误：

Unhandled Exception: System.Net.WebException: The operation has timed out  
at System.Net.HttpWebRequest.GetResponse()  
at vir_fu.Program.Main(String[] args)

The requestCount循环在我的基本代码之外工作正常，但是当我将其添加到我的项目中时，我收到此错误。我尝试过设置request.Timeout = 200;但这没有帮助。

它的意思就是它所说的。该操作花费太长时间才能完成。

顺便说一句，看看WebRequest.Timeout http://msdn.microsoft.com/en-us/library/system.net.webrequest.timeout.aspx你会看到您已将超时设置为 1/5 秒.