.NET Compact Framework中带有POST参数的异步WebRequest [英] Asynchronous WebRequest with POST-parameters in .NET Compact Framework

问题描述

我正在尝试在.NET Compact Framework上进行异步HTTP（S）POST，但似乎无法正常工作。

I'm trying to do an asynchronous HTTP(S) POST on .NET Compact Framework and I can't seem to get it working.

这就是我的意思我正在做：

Here's what I'm doing:

private void sendRequest(string url, string method, string postdata) {
    WebRequest rqst = HttpWebRequest.Create(url);
    CredentialCache creds = new CredentialCache();
    creds.Add(new Uri(url), "Basic", new NetworkCredential(this.Uname, this.Pwd));
    rqst.Credentials = creds;
    rqst.Method = method;
    if (!String.IsNullOrEmpty(postdata)) {
        rqst.ContentType = "application/xml";
        byte[] byteData = UTF8Encoding.UTF8.GetBytes(postdata);
        rqst.ContentLength = byteData.Length;
        using (Stream postStream = rqst.GetRequestStream()) {
            postStream.Write(byteData, 0, byteData.Length);
            postStream.Close();
        }
    }
    ((HttpWebRequest)rqst).KeepAlive = false;
    rqst.BeginGetResponse(DataLoadedCB, rqst);
}

private void DataLoadedCB(IAsyncResult result) {
    WebRequest rqst = ((WebRequest)(((BCRqst)result.AsyncState).rqst));
    WebResponse rsps = rqst.EndGetResponse(result);

    /* ETC...*/
}

...但是由于某种原因，我在DataLoadedCB的第二行上得到了WebException：

...but for some reason I get a WebException on the second row of DataLoadedCB:

此请求需要缓冲数据才能成功进行身份验证或重定向。

"This request requires buffering of data for authentication or redirection to be successful."

当我执行简单的HTTP GET时，完全相同的代码可以完美地工作，但是当我放入一些POST参数时，一切都会失败。

The exact same code works perfectly, when I do a simple HTTP GET, but when I throw in some POST params, everything fails.

有什么想法吗？

推荐答案

我真高兴！我找到了问题的答案！！！！

I am ever so happy! I found the answer to my question!!!

这行代码可以解决问题：

This little line did the trick:

((HttpWebRequest)rqst).AllowWriteStreamBuffering = true;

这篇关于.NET Compact Framework中带有POST参数的异步WebRequest的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！