Thread.Sleep() without freezing the UI

问题

First off, I am a beginner in C# and I would like to make this:

class2.method_79(null, RoomItem_0, num, num2, 0, false, true, true);
System.Threading.Thread.Sleep(250);
class2.method_79(null, RoomItem_0, num, num4, 0, false, true, true);
System.Threading.Thread.Sleep(300);
class2.method_79(null, RoomItem_0, num, num6, 0, false, true, true);

But this solution freezes the UI, how could I make the second event occur 250ms after the first etc without freezing the UI?

回答1:

The simplest way to use sleep without freezing the UI thread is to make your method asynchronous. To make your method asynchronous add the async modifier.

private void someMethod()

private async void someMethod()

Now you can use the await operator to perform asynchronous tasks, in your case.

await Task.Delay(milliseconds);

This makes it an asynchronous method and will run asynchronously from your UI thread.

Note that this is only supported in the Microsoft .NET framework 4.5 and higher.

回答2:

You could use a Dispatcher Timer to time your execution of methods..

回答3:

You are in the UI thread when you call .Sleep();.

That's why it's freezing the UI. If you need to do this without freezing the UI you would need to run the code in separate threads.

回答4:

Run your time consuming tasks on separate thread. Avoid time consuming tasks and Thread.Sleep() on UI thread.

回答5:

Try this code

public static void wait(int milliseconds)
        {
            System.Windows.Forms.Timer timer1 = new System.Windows.Forms.Timer();
            if (milliseconds == 0 || milliseconds < 0) return;
            timer1.Interval = milliseconds;
            timer1.Enabled = true;
            timer1.Start();
            timer1.Tick += (s, e) =>
            {
                timer1.Enabled = false;
                timer1.Stop();
            };
            while (timer1.Enabled)
            {
                Application.DoEvents();
            }
        }

来源：https://stackoverflow.com/questions/24136390/thread-sleep-without-freezing-the-ui

标签

thread-sleep