Question

Is there a library/framework to execute long running actions in .NET? Looking for something like this:

private void button1_Click(...)
{
  LongActionRunner.Execute((ref int total, ref int done) => {
    // i know it's not thread-safe
    total = 100;
    for(var i = 0; i <= 100; ++i) {
      done = i;
      Thread.Sleep(100); // slow
    }
  });
}

When Execute() is called, I need to display a window with progress bar. If my action throws, it should display an error message, etc.

Are there any existing solutions?

Answer 1

You can use the BackgroundWorker. It is meant especially for the scenario that you presented.
See here for a tutorial on how to implement a progress bar using BackgroundWorker.