private void UpdateZOrder(ActivityDesigner activityDesigner, ZOrder zorder)
{
IDesignerHost service = base.GetService(typeof(IDesignerHost)) as IDesignerHost;
DesignerTransaction transaction = null;
if (service != null)
{
transaction = service.CreateTransaction(DR.GetString("ZOrderUndoDescription", new object[] { activityDesigner.Text }));
}
try
{
bool flag = false;
CompositeActivityDesigner parentDesigner = this;
ActivityDesigner designer2 = activityDesigner;
while ((parentDesigner != null) && (designer2 != null))
{
if (parentDesigner is FreeformActivityDesigner)
{
ReadOnlyCollection <ActivityDesigner> containedDesigners = parentDesigner.ContainedDesigners;
if ((containedDesigners.Count > 1) && (containedDesigners[(zorder == ZOrder.Background) ? 0 : (containedDesigners.Count - 1)] != designer2))
{
int connector = (zorder == ZOrder.Background) ? 0 : containedDesigners.Count;
parentDesigner.MoveActivities(new ConnectorHitTestInfo(this, HitTestLocations.Designer, connector), new List <Activity>(new Activity[] { designer2.Activity }).AsReadOnly());
flag = true;
}
}
designer2 = parentDesigner;
parentDesigner = parentDesigner.ParentDesigner;
}
if (flag)
{
base.Invalidate();
}
if (transaction != null)
{
transaction.Commit();
}
}
catch (Exception exception)
{
if (transaction != null)
{
transaction.Cancel();
}
throw exception;
}
}