/// <summary>
/// Initializes a new instance of the CenterViewModel class.
/// </summary>
public CenterViewModel(Center center, TreeViewItemViewModel parentField)
: base(parentField)
{
_center = center;
//_center.CenterConnection.ConnectionChanged += _centerConection_ConnectionChanged;
}
/// <summary>
/// Initializes a new instance of the TreeViewItemViewModel class.
/// </summary>
protected TreeViewItemViewModel(TreeViewItemViewModel parent)
{
_parent = parent;
_children = new ObservableCollection <TreeViewItemViewModel>();
}