Question

I am just working on my first GUI application on Windows.

I have a WPF GUI to a small C# utility which copies files. When the button is clicked to copy, I obviously don’t want the GUI to hang. So, I fire off a new thread to run the method which copies the files. I assume I’m on track so far and there’s no “better” way of doing it in C#?

Now, I have a ProgressBar which I want to appear filled when the thread is done. (It’s fine running as indeterminate for now). How do I check when the copying is done?

So, so far I have:

Thread t = new Thread(delegate() 
{ 
    po.Organise(inputPath, outputPath, recursive); 
});

t.Start();

PBar.IsIndeterminate = true;

And I want something after that that works like:

if (t.Done)
{
    PBar.Value = 100;
}

Answer 1

Have a look at the BackgroundWorker class. It supports events like RunWorkerCompleted or ProgressChanged.
Have a look here, too (this is about threading in general + backgroundworker, again).