public override void TopDownReArrangeContent()
{
//vinv_IsInTopDownReArrangePhase = true;
#if DEBUG
vinv_dbug_EnterLayerReArrangeContent(this);
#endif
//this.BeginLayerLayoutUpdate();
RenderBoxBase container = this.OwnerRenderElement as RenderBoxBase;
if (container != null)
{
PerformHorizontalFlowArrange(0, container.Width, 0);
}
if (Reflow != null)
{
Reflow(this, EventArgs.Empty);
}
//this.EndLayerLayoutUpdate();
#if DEBUG
vinv_dbug_ExitLayerReArrangeContent();
#endif
}