Windows UWP c#HttpClient发布和进度

因此，我需要在我的应用程序上安装一个progressbar，我复制了微软的开源示例（抱歉，不抱歉），它的工作非常出色，除非您必须包含POST数据（或者我只是个白痴，无法理解它）

工作代码：

const uint streamLength = 100000;
            HttpStreamContent streamContent = new HttpStreamContent(new SlowInputStream(streamLength));
IProgress<HttpProgress> progress = new Progress<HttpProgress>(ProgressHandler);
                response = await httpClient.PostAsync(new Uri(settings.url + "/script.php"), streamContent).AsTask(cts.Token, progress);

我将如何将我的formContent（或者如果你想用另一种方式，也可以）放入streamContent，因为如果没有streamContent，进度就不起作用

编辑1：

所以，它起作用了，现在进度不再起作用了。这是我的进度函数

private void ProgressHandler(HttpProgress progress)
    {
        Debug.WriteLine("Stage: " + progress.Stage.ToString());
        Debug.WriteLine("Retires: " + progress.Retries.ToString(CultureInfo.InvariantCulture));
        Debug.WriteLine("Bytes Sent: " + progress.BytesSent.ToString(CultureInfo.InvariantCulture));
        Debug.WriteLine("Bytes Received: " + progress.BytesReceived.ToString(CultureInfo.InvariantCulture));

        ulong totalBytesToSend = 0;
        if (progress.TotalBytesToSend.HasValue)
        {
            totalBytesToSend = progress.TotalBytesToSend.Value;
            Debug.WriteLine("Total Bytes To Send: " + totalBytesToSend.ToString(CultureInfo.InvariantCulture));
        }
        else
        {
            Debug.WriteLine("Total Bytes To Send: " + "unknown");
        }

        ulong totalBytesToReceive = 0;
        if (progress.TotalBytesToReceive.HasValue)
        {
            totalBytesToReceive = progress.TotalBytesToReceive.Value;
            Debug.WriteLine("Total Bytes To Receive: " + totalBytesToReceive.ToString(CultureInfo.InvariantCulture));
        }
        else
        {
            Debug.WriteLine("Total Bytes To Receive: " + "unknown");
        }

        double requestProgress = 0;
        if (progress.Stage == HttpProgressStage.SendingContent && totalBytesToSend > 0)
        {
            requestProgress = progress.BytesSent * 50 / totalBytesToSend;
        }
        else if (progress.Stage == HttpProgressStage.ReceivingContent)
        {
            // Start with 50 percent, request content was already sent.
            requestProgress += 50;

            if (totalBytesToReceive > 0)
            {
                requestProgress += progress.BytesReceived * 50 / totalBytesToReceive;
            }
        }
        else
        {
            return;
        }
        Debug.WriteLine("Progress: " + requestProgress);
        snap_progress.Value = requestProgress;
    }

下面是它在调试中显示的内容：

Stage: ReceivingContent
Retires: 0
Bytes Sent: 180
Bytes Received: 6757607
Total Bytes To Send: 180
Total Bytes To Receive: unknown
Progress: 50

---

尽管我看到收到的字节数在增加，但它始终是未知的。

所以我的答案几乎是空的，我只需要在php脚本上设置内容长度来获得代码的大小，它显示的是未知的。我仍然不知道它以前是如何得到它的。

你可以使用StringContent作为文本。@kiewic我使用了多内容它似乎应该可以工作，但不能。我的PHP脚本无法识别POST数据，即使通过fiddler它看起来是正确的。我尝试了没有流的多部分，只有POST数据，但仍然无法工作。

private void ProgressHandler(HttpProgress progress)
    {
        Debug.WriteLine("Stage: " + progress.Stage.ToString());
        Debug.WriteLine("Retires: " + progress.Retries.ToString(CultureInfo.InvariantCulture));
        Debug.WriteLine("Bytes Sent: " + progress.BytesSent.ToString(CultureInfo.InvariantCulture));
        Debug.WriteLine("Bytes Received: " + progress.BytesReceived.ToString(CultureInfo.InvariantCulture));

        ulong totalBytesToSend = 0;
        if (progress.TotalBytesToSend.HasValue)
        {
            totalBytesToSend = progress.TotalBytesToSend.Value;
            Debug.WriteLine("Total Bytes To Send: " + totalBytesToSend.ToString(CultureInfo.InvariantCulture));
        }
        else
        {
            Debug.WriteLine("Total Bytes To Send: " + "unknown");
        }

        ulong totalBytesToReceive = 0;
        if (progress.TotalBytesToReceive.HasValue)
        {
            totalBytesToReceive = progress.TotalBytesToReceive.Value;
            Debug.WriteLine("Total Bytes To Receive: " + totalBytesToReceive.ToString(CultureInfo.InvariantCulture));
        }
        else
        {
            Debug.WriteLine("Total Bytes To Receive: " + "unknown");
        }

        double requestProgress = 0;
        if (progress.Stage == HttpProgressStage.SendingContent && totalBytesToSend > 0)
        {
            requestProgress = progress.BytesSent * 50 / totalBytesToSend;
        }
        else if (progress.Stage == HttpProgressStage.ReceivingContent)
        {
            // Start with 50 percent, request content was already sent.
            requestProgress += 50;

            if (totalBytesToReceive > 0)
            {
                requestProgress += progress.BytesReceived * 50 / totalBytesToReceive;
            }
        }
        else
        {
            return;
        }
        Debug.WriteLine("Progress: " + requestProgress);
        snap_progress.Value = requestProgress;
    }

Stage: ReceivingContent
Retires: 0
Bytes Sent: 180
Bytes Received: 6757607
Total Bytes To Send: 180
Total Bytes To Receive: unknown
Progress: 50