How can I download multiple files with WebClient in C#?

Question

I can't seem to figure out how to download multiple files using DownloadFileAsync. How can I input a list as a URI?

My current code for a single download looks like this:

        WebClient client = new WebClient();
        client.Headers.Add("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0)");
        client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(client_DownloadProgressChanged);
        client.DownloadFileCompleted += new AsyncCompletedEventHandler(client_DownloadFileCompleted);

        // Starts the download
        client.DownloadFileAsync(new Uri(chosenVersion), tbFolder.Text + chosenVersionFileName);

'chosenVersion' is just a link, say example.com/some.jpeg.

I just want to get all the downloads bundled into one progress bar while downloading at the same time.

http://stackoverflow.com/questions/6992553/how-do-i-async-download-multiple-files-using-webclient-but-one-at-a-time/6992743#6992743 http://stackoverflow.com/a/2042428/342740 — Prix, Mar 26 '15 at 03:28

score 0 · Answer 1 · edited May 23 '17 at 12:14

I just want to get all the downloads bundled into one progress bar while downloading at the same time.

An instance of WebClient can handle just one download at a time. You can modify the approach given in

https://stackoverflow.com/a/6992743/141172

to download multiple files in parallel by replacing the queue with a construct such as a List<string> and using Parallel.Foreach() to process the list concurrently.

How can I download multiple files with WebClient in C#?

1 Answers1