Mogation and change the colour of the button using different time intervals

[jonetta]

I want to make a button. Сохранитьin order to successfully perform the operation that it caused the following effect: it gradually blured into green colour, say every 0.6 seconds it blinks green, 2 times, then every 0.4 seconds, 2 times, then 0.2 seconds, 2 times, more and more, at the end it becomes completely green and it does not change. About 1 second, then back in his standard color. There is also a retroactive effect on this principle with red colour. If the flowers are clear, the timers are in trouble, please help. C# programme in VS 2015, WinFormApplication. I've seen DispatcherTimer() But it didn't even work out, because I can't connect. using System.Windows.Threading; I swear.

[shizuka]

I'm not a WinForms specialist, but specifically what you want can be done:

async Task PlaySuccessAnimation(Button b, CancellationToken ct)
{
    // проверка
    if (b.UseVisualStyleBackColor == true)
        throw new InvalidOperationException("Need overridable color");
var origColor = b.BackColor;

var on = TimeSpan.FromSeconds(0.1);
try
{
    // два раза по 0.6 секунд мигаем зелёным
    await Blink(b, Color.Green, on, TimeSpan.FromSeconds(0.5), 2, ct);

    // 2 раза по 0.4 секунды
    await Blink(b, Color.Green, on, TimeSpan.FromSeconds(0.3), 2, ct);

    // 2 раза по 0.2 секунды
    await Blink(b, Color.Green, on, TimeSpan.FromSeconds(0.1), 2, ct);

    b.BackColor = Color.Green;
}
catch (OperationCanceledException ex)
{
    b.BackColor = origColor;
    throw;
}

}
async Task Blink(

Button b, Color color,

TimeSpan on, TimeSpan off, int n,

CancellationToken ct)

{

var origColor = b.BackColor;

for (int i = 0; i < n; i++)

{

b.BackColor = Color.Green;

await Task.Delay(on, ct);

b.BackColor = origColor;

await Task.Delay(off, ct);

}

}

I didn't try, but I don't think it's gonna look good. Wake up!

---

If you're not going to stop the animation, you can just use it. CancellationToken.None as ct♪ If you're going, write like,

var cts = new CancellationTokenSource();

// сохраните cts где-то для дальнейшего использования

await PlaySuccessAnimation(b, cts.Token);

If you need to interrupt the animation, use it. cts.Cancel()♪