public void AdmitEventAsAcquainted()
{
IEventCRUD crud = new EventCRUD(client.GetServerInstance().server);
SelectedEvent.EventData = crud.UpdateAcceptedUsersAndSendOutEvent(SelectedEvent.EventData, ownerForm.GetCurrentUser());
SelectedEvent = new RegularEvent(SelectedEvent);
Events[SelectedEventNum] = SelectedEvent;
SelectedEvent.SetRowStyle(dataGridView.Rows[SelectedEventNum]);
ownerForm.indication.DecNewEventsCount();
SerializeEvents();
}