protected override Task OnInitializeAsync(CancellationToken cancellationToken) { var professor = _professorRepository.GetProfessors(); var professorDepartment = _professorRepository.GetProfessorDepartments(); Task.Run(() => { Professors.AddRange(professor); GetProfessors.AddRange(professor); GetProfessorDepartments.AddRange(professorDepartment); }); return(base.OnInitializeAsync(cancellationToken)); }