Wait some seconds without blocking UI execution

c# timer wait
user3376691 picture user3376691 · Mar 3, 2014 · Viewed 103.4k times · Source

I would like to wait some seconds between two instruction, but WITHOUT blocking the execution.

For example, Thread.Sleep(2000) it is not good, because it blocks execution.

The idea is that I call a method and then I wait X seconds (20 for example) listening for an event coming. At the end of the 20 seconds I should do some operation depending on what happened in the 20 seconds.

Answer

daniellepelley picture daniellepelley · Mar 3, 2014

I think what you are after is Task.Delay. This doesn't block the thread like Sleep does and it means you can do this using a single thread using the async programming model.

async Task PutTaskDelay()
{
    await Task.Delay(5000);
} 

private async void btnTaskDelay_Click(object sender, EventArgs e)
{
    await PutTaskDelay();
    MessageBox.Show("I am back");
}

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