How to Delay an Operation Asynchronously in WPF without Blocking the UI Thread?

How to Delay an Operation Asynchronously in WPF

When attempting to create a delay in an operation, using Thread.Sleep can lead to the UI thread being blocked. To overcome this, asynchronous means should be employed.

One approach is to utilize a DispatcherTimer:

<code class="csharp">tbkLabel.Text = "two seconds delay";

var timer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(2) };
timer.Start();
timer.Tick += (sender, args) =>
{
    timer.Stop();
    var page = new Page2();
    page.Show();
};</code>

Another option involves using Task.Delay:

<code class="csharp">tbkLabel.Text = "two seconds delay";

Task.Delay(2000).ContinueWith(_ =>
{
    var page = new Page2();
    page.Show();
});</code>

For .NET 4.5 and later, async/await can be employed:

<code class="csharp">// Add async keyword to the method signature
public async void TheEnclosingMethod()
{
    tbkLabel.Text = "two seconds delay";

    await Task.Delay(2000);
    var page = new Page2();
    page.Show();
}</code>

By implementing asynchronous methods, the UI thread remains responsive during the delay period, allowing for seamless transitions between windows.

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