public List <UserVM> SearchAllUsersExceptAlreadyParticipantsAndChosen(string search, string chosen, string eventid)
{
var users = mysticoContext.SearchUserExceptParticipants(search, chosen, Convert.ToInt32(eventid));
List <UserVM> userVMs = Library.ConvertUsersToUsersVM(users);
return(userVMs);
}