Bot Builder SDK 4如何使用附件？

Question

Bot Builder SDK 4（dotnet）如何使用附件？我尝试使用BotBuilder-Samples 15.handling-attachments的示例，但在Skype频道上出现401未经授权错误。

foreach (var file in activity.Attachments)
{
    // Determine where the file is hosted.
    var remoteFileUrl = file.ContentUrl;

    // Save the attachment to the system temp directory.
    var localFileName = Path.Combine(Path.GetTempPath(), file.Name)

    // Download the actual attachment
    using (var webClient = new WebClient())
    {
        webClient.DownloadFile(remoteFileUrl, localFileName); <-- 401 here
    }

Answer 1

我在github.com讨论Skype Can not receive attachment? #3623上发现了解决方案，我也刚刚对其进行了成功测试。

我看到对您的代码示例的最小修改如下：

3838