protected virtual void NotifyPropertyChanged(object sender, MatrixEventArgs <T> e)
{
var temp = PropertyChanged;
temp?.Invoke(this, e);
Console.Beep();
if (PropertyChanged.GetInvocationList().Length == 0)
{
PropertyChanged(this, e);
}
}
/// <summary>
/// Event, then signals about change element.
/// </summary>
/// <param name="e">Event.</param>
public virtual void OnElementChanges(MatrixEventArgs <T> e) => ElementChanges(this, e);
