asp.net-mvc - 通过 HttpClient 将文件发送到 ASP.NET MVC 控制器获取奇怪的名称 (=?utf-8?B?U...)

Question

当文件名有特殊字符时，我会在 Request.Files[0].FileName 上收到一个奇怪的文件名。像“=？utf-8？B？U ...”之类的东西

要发送我正在做的文件：

ProgressMessageHandler progress = new ProgressMessageHandler();
progress.HttpSendProgress += OnHttpSendProgress;

HttpClient client = HttpClientFactory.Create(progress);
client.DefaultRequestHeaders.TransferEncodingChunked = true;

MultipartFormDataContent content = new MultipartFormDataContent();
var fileContent = new StreamContent(new FileStream(fileInfo.FullName, FileMode.Open));
content.Add(fileContent, "file", fileInfo.Name);

HttpRequestMessage message = new HttpRequestMessage();
message.Method = HttpMethod.Post;
message.Content = content;
message.RequestUri = uri;

var resultado = await client.SendAsync(message, CancellationToken);

我究竟做错了什么？

我正在使用 WebClient 一段时间：

WebClient client = new WebClient();
client.UploadProgressChanged += OnHttpSendProgress;
await client.UploadFileTaskAsync(uriBuilder.Uri, "POST", fileInfo.FullName);