CODEWITHSUNDEEP
c#.net
clamp
clamp

Reputation: 34006

Tracking DownloadProgress with synchronous download

basically i would like to do something like this:

using (WebClient wc = new WebClient())
{
    wc.DownloadProgressChanged += (sender, args) =>
        {
            progress = (float) args.BytesReceived / (float) args.TotalBytesToReceive;
        };
    wc.DownloadFile(new Uri(noLastSegment + file), path);
}

this doesnt work, because the progress is only fired for asynchronous downloads like DownloadFileAsync.

Upvotes: 0

Views: 419

Answers (1)

Mike Zboray
Mike Zboray

Reputation: 40788

Usually you've got some other thread like a UI thread if you can show progress, however maybe you've got a console app or something. You can easily use some kind of wait handle and set it when the download completes.

using (var completedEvent = new ManualResetEventSlim(false))
using (WebClient wc = new WebClient())
{
    wc.DownloadFileCompleted += (sender, args) => 
    {
        completedEvent.Set();
    };
    wc.DownloadProgressChanged += (sender, args) =>
    {
        progress = (float) args.BytesReceived / (float) args.TotalBytesToReceive;
    };
    wc.DownloadFileAsync(new Uri(noLastSegment + file), path);
    completedEvent.Wait();
}

Upvotes: 4

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