/// <summary>
 /// use the mapFrame with this dialog
 /// </summary>
 /// <param name="mapFrame"></param>
 public MapFrameProjectionDialog(IMapFrame mapFrame)
 {
     InitializeComponent();
     _mapFrame = mapFrame;
     _projection = new ProjectionInfo();
     _projection.CopyProperties(_mapFrame.Projection);
     UpdateProjectionStrings();
 }