public bool DeleteAssignmentRoleForConferenceAndAccount(int conferenceId, string login, int roleId)
{
var staff = _repository.GetConferenceStaff(conferenceId, login, roleId);
if (staff != null)
{
try
{
_repository.DeleteConferenceStaff(staff.AccountId, staff.RoleId, staff.ConferenceId);
return(true);
}
catch { }
}
return(false);
}
