/// <summary>Initializes a new instance of the MessageBase class.</summary>
 public TzxBlockSelectedMessage(TapeFileViewModel sender, TapeBlockViewModelBase block)
 {
     Sender = sender;
     Block  = block;
 }
 /// <summary>Initializes a new instance of the <see cref="T:System.EventArgs" /> class.</summary>
 public TzxBlockSelectedEventArgs(TapeBlockViewModelBase block)
 {
     Block = block;
 }