/// <summary>
/// Method to invoke when the ToggleMarkBarState command is executed.
/// </summary>
private void ToggleMarkBarState()
{
MarkCollections.ForEach(x => x.ShowMarkBar = _markBarToggleState);
_markBarToggleState = !_markBarToggleState;
}
/// <summary>
/// Method to invoke when the EnableAllLines command is executed.
/// </summary>
private void ToggleLineState()
{
MarkCollections.ForEach(x => x.ShowGridLines = _lineToggleState);
_lineToggleState = !_lineToggleState;
}