public NodeBinButton(VplElement hostNodeGroup)
{
HostElement = hostNodeGroup;
//HostElement.HostCanvas.Children.Add(this);
HostElement.HitTestGrid.Children.Add(this);
Grid.SetColumn(this, 4);
Style = FindResource("BinButton20") as Style;
HostNodeGroup_PropertyChanged(null, null);
HostElement.PropertyChanged += HostNodeGroup_PropertyChanged;
}