webClient.UploadData（）的执行效率问题
写了个winform程序用来批量提交表单，每次循环都用下面一句上传数据

byte[] reponseData = webClient.UploadData(url, "POST", postData);

这句代码既提交了表单，也返回了服务器的响应

如果此时服务器比较忙，是不是就会卡在这里？

每次提交数据时都慢的要死，大牛们有什么好的意见？

需要使用多线程么？谢谢

只有30分了，另请问怎么多赚分？

[解决办法]
是卡，你可以使用异步的 UploadDataAsync
[解决办法]
有UploadDataCompleted 事件

C# code

public static void UploadDataInBackground2 (string address){    WebClient client = new WebClient ();    Uri uri = new Uri(address);    string text = "Time = 12:00am temperature = 50";    byte[] data = System.Text.Encoding.UTF8.GetBytes (text);    string method = "POST";    client.UploadDataCompleted += new UploadDataCompletedEventHandler (UploadDataCallback2);    client.UploadDataAsync (uri, method, data);}public static void UploadDataCallback2 (Object sender, UploadDataCompletedEventArgs e){    byte[] data = (byte[])e.Result;    string reply = System.Text.Encoding.UTF8.GetString (data);    Console.WriteLine (reply);}