等待动画完成再恢复

Question

i am animating a line using this function

 public static void Line(Canvas Drawing_Area, Point p1, Point p2)
    {
        Line line = new Line();
        Drawing_Area.Children.Insert(0, line);
        line.Stroke = Brushes.Black;
        line.StrokeThickness = 3;
        Storyboard sb = new Storyboard();
        Random r = new Random();
        line.X1 = p1.X;
        line.Y1 = p1.Y - TopMargin;
        line.X2 = p1.X;
        line.Y2 = p1.Y - TopMargin;
        DoubleAnimation animation1 = new DoubleAnimation(line.Y1, p1.Y - TopMargin, new Duration(new TimeSpan(0, 0, 1)));
        DoubleAnimation animation2 = new DoubleAnimation(line.X1, p1.X, new Duration(new TimeSpan(0, 0, 1)));
        DoubleAnimation animation3 = new DoubleAnimation(line.Y2, p2.Y - TopMargin, new Duration(new TimeSpan(0, 0, 1)));
        DoubleAnimation animation4 = new DoubleAnimation(line.X2, p2.X, new Duration(new TimeSpan(0, 0, 1)));
        Storyboard.SetTargetProperty(animation1, new PropertyPath("(Line.Y1)"));
        Storyboard.SetTargetProperty(animation2, new PropertyPath("(Line.X1)"));
        Storyboard.SetTargetProperty(animation3, new PropertyPath("(Line.Y2)"));
        Storyboard.SetTargetProperty(animation4, new PropertyPath("(Line.X2)"));
        sb.Children.Add(animation1);
        sb.Children.Add(animation2);
        sb.Children.Add(animation3);
        sb.Children.Add(animation4);
        sb.Begin(line);
    }

how can i wait for the animation to finish before continuing (existing the function)

Answer 1

Storyboard has a Completed event which you could subscribe to that tells you when the storyboard has finished running.

You could also use Event Wait Handles to block the thread from continuing execution until your other event fires.