public static bool TryRemove(EmployeeOnProject ToBeRemoved)
 {
     if (GetEmployeesOnProject(ToBeRemoved.ProjectName).Count == 1)
     {
         return(false);
     }
     AllParticipants.Remove(ToBeRemoved);
     return(true);
 }
        public static bool AddProject(string projectname, string oib, int workhours)
        {
            foreach (var Relation in AllParticipants)
            {
                if (Relation.ProjectName == projectname && Relation.OIB == oib)
                {
                    return(false);
                }
            }

            var NewRelation = new EmployeeOnProject(projectname, oib, workhours);

            AllParticipants.Add(NewRelation);
            return(true);
        }
 public static void Remove(EmployeeOnProject ToBeRemoved)
 {
     AllParticipants.Remove(ToBeRemoved);
 }