Hi I am trying to make a "flash animation" where the screen turns white for a fraction of a second, and then goes back to normal.
Here is my code:
private void QuickFallAnimation ()
{
plGame.BackColor = Color.White;
Thread.Sleep(50);
plGame.BackColor = Color.Black;
}
The problem is that background-color never changes to white. It just stays black even though the rest of the application pauses for 50 milliseconds. Can anyone help?
>Solution :
The reason for the problem is that your putting your UI thread to sleep. While sleeping the UI is blocked and cannot do a re-render. Never block the UI thread.
changing the code to use async/await should fix the issue:
private async Task QuickFallAnimation ()
{
plGame.BackColor = Color.White;
await Task.Delay(50);
plGame.BackColor = Color.Black;
}
You might also need to manually trigger a re-render, something like plGame.Invalidate();
The same could be done with a timer. Task.Delay is simply a wrapper around a timer that is sometimes convenient to use. But for more complex animations, a timer might be more appropriate.