private void edit(Student obj) {
     //             EditViewModel editVM = new EditViewModel(obj);
     //             _dialogService.ShowDialog(editVM);
     EditViewModel editVM = ViewManager.Show<EditViewModel>();
     editVM.Student = obj ;
     editVM.Name = obj.Name;
 }
 private bool canEdit(Student arg) {
     return true;
 }
 /// <summary>
 /// Initializes a new instance of the EditViewModel class.
 /// </summary>
 public EditViewModel(Student student) {
     _student = student;
     _name = _student.Name;
 }