public CalendarDapperRepository(IDbConnectionFactory factory, IKeyGenerator<Guid> keygenerator, IEventRepository eventrepository)
{
dbconnection.ThrowIfNull("factory");
keygenerator.ThrowIfNull("keygenerator");
eventrepository.ThrowIfNull("eventrepository");
this.factory = factory;
this.keygenerator = keygenerator;
this.eventrepository = eventrepository;
}