使用HttpClient和HttpContent上传文件到asp.net mvc,如何解析数据?

[ycxjex2006]

HttpClient client = new HttpClient();
            MultipartContent content = new MultipartContent();
            StorageFile file = await KnownFolders.DocumentsLibrary.GetFileAsync("test.si");
            using (IRandomAccessStream stream = await file.OpenReadAsync())
            {
                MultipartContent form = new MultipartContent();
                StreamContent fileContent = new StreamContent(stream.AsStreamForRead());
                StringContent stringContent=new StringContent("test");                   
                form.Add(fileContent); 
                form.Add(stringContent);
                HttpResponseMessage msg = await                         client.PostAsync("http://localhost:2489/Convert/ConvertToPics",form);
            }

在action中查看Request.Form和Request.Files都没有
在Request.InputStream中发现流数据
但是它们是混在一起的
我想要有条理地获取这两个值
谢谢