private void CountdownTimer_Tick(object sender, EventArgs e)
{
TimeSpan diff = countdownEnd - DateTime.Now;
if (diff.TotalMilliseconds <= 0)
{
countdownTimer.Stop();
DoubleAnimation fadeOut = new DoubleAnimation(0.0, TimeSpan.FromMilliseconds(2500));
CountdownViewBox.BeginAnimation(OpacityProperty, fadeOut);
return;
}
CountdownTextBox.Text = Math.Floor(diff.TotalMinutes).ToString("00") + ":" + diff.Seconds.ToString("00");
}
public void SetCountdown(double seconds)
{
countdownTimer.Stop();
countdownEnd = DateTime.Now.AddSeconds(seconds);
CountdownTimer_Tick(null, null);
DoubleAnimation fadeIn = new DoubleAnimation(1.0, TimeSpan.FromMilliseconds(2500));
fadeIn.Completed += (s, e) =>
{
countdownEnd = DateTime.Now.AddSeconds(seconds);
countdownTimer.Start();
};
CountdownViewBox.BeginAnimation(OpacityProperty, fadeIn);
}
