C# wait 1 second

Question

Is there such a function like sleep(seconds) but it wouldn't block UI updates? I have a code like this and if I put threading sleep after (letters.Children[Words[index].index] as TextBlock).Text = Words[index].LetterCorrect; (I want to sleep after that) it just waits 1 sec and then UI gets updates, but I dont want that.

private void Grid_Click(object sender, RoutedEventArgs e) { if (index == Words.Count() - 1) return; if ((((e.Source as Button).Content as Viewbox).Child as Label).Content.ToString() == Words[index].LetterCorrect) { (letters.Children[Words[index].index] as TextBlock).Text = Words[index].LetterCorrect; letters.Children.Clear(); LoadWord(++index); this.DataContext = Words[index]; } }

You would need to send a different thread to sleep and not the UI thread. — Andrew
– Andrew, Commented Jul 26, 2011 at 18:21

Ryan Bennett · Accepted Answer · 2011-07-26 18:20:06Z

7

Try a Timer and have the Elapsed callback execute the code you want to happen after the one second.

answered Jul 26, 2011 at 18:20

Ryan Bennett

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1 Comment

user360330 Over a year ago

Yeah, I ended up using this one. Thanks!

yas4891 · Accepted Answer · 2011-07-26 18:27:10Z

Create a working thread that does the work for you and let that thread sleep for the desired time before going to work

e.g.

ThreadPool.QueueUserWorkItem((state) => { Thread.Sleep(1000); // do your work here // CAUTION: use Invoke where necessary });

Stephen Kiningham · Accepted Answer · 2011-07-26 18:21:08Z

Put the logic itself in a background thread separate from the UI thread and have that thread wait.

Anything in the UI thread that waits 1 second will lock up the entire UI thread for that second.

Jonathan Holland · Accepted Answer · 2011-07-26 18:27:20Z

Use an async scheduled callback:

private void Grid_Click(object sender, RoutedEventArgs e) { if (index == Words.Count() - 1) return; if ((((e.Source as Button).Content as Viewbox).Child as Label).Content.ToString() == Words[index].LetterCorrect) { (letters.Children[Words[index].index] as TextBlock).Text = Words[index].LetterCorrect; Scheduler.ThreadPool.Schedule(schedule => { letters.Children.Clear(); LoadWord(++index); this.DataContext = Words[index]; }, TimeSpan.FromSeconds(1)); } }

Hm, but there isn't anything like that in autocomplete.. Do I need to add reference or something?

Bobby D · Accepted Answer · 2011-07-26 18:21:40Z

Not sure what framework you are using, but if you are using Silverlight or WPF, have you considered playing an animation that reveals the correct letter or does a fade sequence that takes 1000ms?

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