Параметр передачи форм Xamarin в viewmodel

Question

Я пытаюсь создать страницу содержимого форм Xamarin, которая содержит сетку с формой ввода, а затем на той же странице сетку данных, содержащую связанные данные. Итак, у меня есть хирургический случай, а затем в сетке данных будут находиться сотрудники, связанные с этим хирургическим случаем. Я не уверен, как связать таблицу данных о персонале с хирургическим случаем, чтобы он отображал персонал только из этого одного случая. Я включаю все это в одну и ту же модель представления. Как передать SxCaseId из формы ввода в сетку данных?

 public class SxCaseMasterViewModel : ViewModelBase
{
    private ISxCaseDataService _sxCaseDataService;
    private ICaseStaffJoinForSxCaseDataService _caseStaffJoinForSxCaseDataService;
    private SxCase _selectedSxCase;
    private CaseStaffJoin _selectedCaseStaffJoin;
    private CaseStaffJoin caseStaffJoin;
    private ObservableCollection<CaseStaffJoin> _caseStaffJoins;
    private ObservableCollection<SxCase> _sxCases;

    public SxCaseMasterViewModel(IConnectionService connectionService,
        INavigationService navigationService, IDialogService dialogService,
        ICaseStaffJoinForSxCaseDataService caseStaffJoinForSxCaseDataService,
        ISxCaseDataService sxCaseDataService) : base(connectionService, navigationService, dialogService)
    {
        _sxCaseDataService = sxCaseDataService;
        _caseStaffJoinForSxCaseDataService = caseStaffJoinForSxCaseDataService;
        SxCases = new ObservableCollection<SxCase>();
        CaseStaffJoins = new ObservableCollection<CaseStaffJoin>();


    }

    public ICommand UpdateSxCaseCommand => new Command(OnUpdateSxCase);

    public SxCase SelectedSxCase
    {
        get => _selectedSxCase;
        set
        {
            _selectedSxCase = value;
            OnPropertyChanged();
        }
    }

    public ObservableCollection<SxCase> SxCases
    {
        get => _sxCases;
        set
        {
            _sxCases = value;
            OnPropertyChanged();
        }
    }

    public override async Task InitializeAsync(object sxCase)
    {
        SelectedSxCase = (SxCase)sxCase;
    }

    public CaseStaffJoin SelectedCaseStaffJoin
    {
        get => _selectedCaseStaffJoin;
        set
        {
            _selectedCaseStaffJoin = value;
            OnPropertyChanged();
        }
    }

    public ObservableCollection<CaseStaffJoin> CaseStaffJoins
    {
        get => _caseStaffJoins;
        set
        {
            _caseStaffJoins = value;
            OnPropertyChanged();
        }
    }




    private async void OnUpdateSxCase(object sxCase)
    {
        await _sxCaseDataService.UpdateSxCase(SelectedSxCase.SxCaseId, SelectedSxCase);
        OnPropertyChanged();
        await _dialogService.ShowDialog("Case details updated.", "Success", "OK");
        await _navigationService.NavigateToAsync<SxCaseViewModel>();
        //await _navigationService.PopToRootAsync();

    }

    public ICommand DeleteSxCaseCommand => new Command(async () =>
    {
        await _sxCaseDataService.DeleteSxCase(SelectedSxCase.SxCaseId);
        await _dialogService.ShowDialog("Case deleted.", "Success", "OK");
        await _navigationService.NavigateToAsync<SxCaseViewModel>();

    });

}



<ContentPage.Content>
        <Grid>
            <StackLayout BackgroundColor="Yellow">
                <Grid Grid.Row="0" Padding="10" x:Name="MasterGrid">

                    <Grid.RowDefinitions>

                        <RowDefinition Height="*"/>
                        <RowDefinition Height="*"/>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />
                        <RowDefinition Height="*" />

                    </Grid.RowDefinitions>

                    <Grid.ColumnDefinitions>

                        <ColumnDefinition Width="100"/>

                        <ColumnDefinition Width="*"/>

                    </Grid.ColumnDefinitions>

                    <Label Text="CaseId" Grid.Row="0" Grid.Column="0"/>
                    <Label Text="{Binding SelectedSxCase.SxCaseId}" Grid.Row="0" Grid.Column="1"/>
                    <Label Text="Dos" Grid.Row="1" Grid.Column="0"/>
                    <renderers:SfDatePicker x:Name="dos" BindingContext="{Binding SelectedSxCase.Dos}" Grid.Row="1" Grid.Column="1" HorizontalOptions="StartAndExpand"/>
                    <Label Text="EyeId" Grid.Column="0" Grid.Row="2"/>
                    <Entry Text="{Binding SelectedSxCase.EyeId, Mode=TwoWay}" Grid.Column="1" Grid.Row="2"/>
                    <Label Text="Facesheet" Grid.Column="0" Grid.Row="3"/>
                    <Entry Text="{Binding SelectedSxCase.Facesheet, Mode=TwoWay}" Grid.Column="1" Grid.Row="3"/>
                    <Label Text="Record" Grid.Column="0" Grid.Row="4"/>
                    <Entry Text="{Binding SelectedSxCase.Record, Mode=TwoWay}" Grid.Column="1" Grid.Row="4"/>
                    <Label Text="Complication" Grid.Column="0" Grid.Row="5"/>
                    <Switch IsToggled="{Binding SelectedSxCase.Complication, Mode=TwoWay}" Grid.Column="1" Grid.Row="5"/>
                    <Label Text="ReturnOr" Grid.Column="0" Grid.Row="6"/>
                    <Switch IsToggled="{Binding SelectedSxCase.ReturnOr, Mode=TwoWay}" Grid.Column="1" Grid.Row="6"/>
                    <Label Text="PhysicianId" Grid.Column="0" Grid.Row="7"/>
                    <Entry Text="{Binding SelectedSxCase.PhysicianId, Mode=TwoWay}" Grid.Column="1" Grid.Row="7"/>
                    <Label Text="{Binding SelectedSxCase.Physician}"/>
                    <Button Text="Update Case" Style="{StaticResource RegularButton}"
                                Command="{Binding UpdateSxCaseCommand}" Grid.Row="8" Grid.Column="0" Grid.ColumnSpan="2" 
                                HorizontalOptions="Center"/>
                    <Button Text="Delete Case" Style="{StaticResource RegularButton}" 
                                Command="{Binding DeleteSxCaseCommand}" Grid.Row="8" Grid.Column="1" Grid.ColumnSpan="2" 
                                HorizontalOptions="Center"/>


                </Grid>



                <Grid Grid.Row="1">

                    <Grid.RowDefinitions>

                        <RowDefinition Height="5*" x:Name="firstRow" />

                        <RowDefinition Height="3*" />

                        <RowDefinition Height="*" />

                    </Grid.RowDefinitions>

                    <Grid.ColumnDefinitions>

                        <ColumnDefinition Width="*" />
                        <ColumnDefinition Width="100" />



</Grid.ColumnDefinitions>
                        <datagrid:SfDataGrid 
                        ItemsSource="{Binding CaseStaffJoins, Mode=TwoWay}" AllowEditing="True"  AutoGenerateColumns="True">
                        </datagrid:SfDataGrid>




                </Grid>

            </StackLayout>
        </Grid>
    </ContentPage.Content>