How to serialize async/await?

Question

Let\'s suppose I have this simple snippet:

async void button_Click(object sender, RoutedEventArgs e)
{
    await Task.Factory.StartNew(() =>
    {
                


        

Answer 1

What about trying the Dataflow.ActionBlock with the (default) max degree of parallelism of 1. This way you don't need to worry about any of the thread safety / locking concerns.

It could look something like:

...
var _block = new ActionBlock(async b =>
                {
                    Console.WriteLine("start");
                    await Task.Delay(5000);
                    Console.WriteLine("end");
                });
...


async void button_Click(object sender, RoutedEventArgs e)
{
    await _block.SendAsync(true);
}

You could also setup the ActionBlock to receive a Task or Func, and simply run / await this input. Which would allow multiple operations to be queued and awaited from different sources.