void RaisePaint()
{
var args = new InvalidateDrawingEventArgs();
args.Width = ActualWidth;
args.Height = ActualHeight;
InvalidateDrawing?.Invoke(this, args);
}
private void CompositionHost_InvalidateDrawing(object sender, InvalidateDrawingEventArgs e)
{
var width = e.Width;
var height = e.Height;
// Clear render target backbround
windowRenderTarget.BeginDraw();
windowRenderTarget.Clear(white);
windowRenderTarget.EndDraw();
// Update graph
if (currentGraph != null)
{
var currentDpi = VisualTreeHelper.GetDpi(this);
currentGraph.UpdateSize(currentDpi, width, height);
}
}