C#循环等待如何实现，让循环每一秒钟执行一次

StrokeCollection strokecollection = new StrokeCollection();
strokecollection = ViewInkcanvas.Strokes.Clone();
ViewInkcanvas.Strokes.Clear();
foreach (Stroke s in strokecollection)
{
ViewInkcanvas.Strokes.Add(s);
//每一秒钟执行一次循环
}