CODE EXAMPLE FOR CSHARP

Reporting Progress from Async Tasks c#

public async Task DownloadFileAsync(string fileName, IProgress<int> progress)
{
  using (var fileStream = ...) // Open local file for writing
  using (var ftpStream = ...) // Open FTP stream
  {
    while (true)
    {
      var bytesRead = await ftpStream.ReadAsync(...);
      if (bytesRead == 0)
        return;
      await fileStream.WriteAsync(...);
      if (progress != null)
        progress.Report(bytesRead);
    }
  }
}