public ExcelOutput(IEventAggregator eventAggregator = null, ILogger logger = null)
{
_eventAggregator = eventAggregator;
_logger = logger;
if (_eventAggregator.IsNullObj())
{
_eventAggregator = EventAggregator.Empty;
}
_eventAggregator.SubsribeEvent(this);
if (_logger.IsNullObj())
{
_logger = new FakeLogger();
}
Assembly assembly = Assembly.LoadFrom("Metaproject.Excel.dll");
Type type = assembly.GetType("Metaproject.Excel.ExcelApp");
_app = (IExcelApp)Activator.CreateInstance(type);
_app.AttachAggregator(_eventAggregator, _logger);
}