To implement Undo, the simplest way is to use a MemoryStream object in your WaveDisplayForm (MDI Child) and simply serialize the Wave (which should be marked as [Serializable] to the stream and hold on to the stream object. private MemoryStream _undoStream = new MemoryStream(); private bool _canUndo = false; public void SaveForUndo() { BinaryFormatter bf = new BinaryFormatter(); bf.Serialize(_undoStream, wave); _undoStream.Flush(); // This rewinds the stream so that when it is used for deserialization, it's ready to use, // otherwise, the deserialization will start deserializing from the end of the stream and would fail. _undoStream.Position = 0; _canUndo = true; } public void Undo() { BinaryFormatter bf = new BinaryFormatter(); ...
Comments
Post a Comment