Binding within a DataTemplate

[CristianoDevNet]

I have the following xaml:
`

<Grid x:Name="ContentArea">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="300" />
        <ColumnDefinition />
    </Grid.ColumnDefinitions>
    <StackPanel Grid.Column="0">
        <Border
            Padding="10"
            BorderBrush="{ThemeResource AccentTextFillColorTertiaryBrush}"
            BorderThickness="1">
            <StackPanel>
                <TextBlock Style="{StaticResource SubtitleTextBlockStyle}" Text="Importe Muitos" />

                <TextBlock
                    Foreground="{ThemeResource TextFillColorTertiaryBrush}"
                    Style="{StaticResource CaptionTextBlockStyle}"
                    Text="Importe um arquivo .csv, com cnpj e nome fantasia, delimitados por ponto-e-virgula." />

                <Image Margin="0,10,0,10" Source="/Assets/empresas_csv.png" />

                <Button
                    HorizontalAlignment="Stretch"
                    Content="Importar .csv"
                    Style="{StaticResource AccentButtonStyle}" />
            </StackPanel>
        </Border>
        <TextBlock
            Margin="0,2,0,5"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Text="ou" />

        <Border
            Padding="10"
            BorderBrush="{ThemeResource AccentTextFillColorTertiaryBrush}"
            BorderThickness="1">
            <StackPanel Orientation="Vertical">
                <TextBlock
                    Margin="0,0,0,7"
                    Style="{StaticResource SubtitleTextBlockStyle}"
                    Text="Cadastre Individualmente" />
                <TextBox PlaceholderText="CNPJ" />

                <TextBox Margin="0,7,0,0" PlaceholderText="Nome Fantasia" />

                <Button
                    Margin="0,7,0,0"
                    HorizontalAlignment="Stretch"
                    Content="Cadastrar Sindicato"
                    Style="{StaticResource AccentButtonStyle}" />
            </StackPanel>
        </Border>
    </StackPanel>
    <Grid Grid.Column="1" Margin="20,0,0,20">
        <Border BorderBrush="{ThemeResource AccentTextFillColorTertiaryBrush}" BorderThickness="1">
            <controls:DataGrid
                x:Name="dataGrid"
                AutoGenerateColumns="False"
                ItemsSource="{x:Bind ViewModel.Sindicatos, Mode=TwoWay}">
                <!--  Coluna Id (somente leitura)  -->
                <controls:DataGrid.Columns>
                    <!--  Coluna Id (somente leitura)  -->
                    <controls:DataGridTextColumn
                        Binding="{Binding Id}"
                        Header="Id"
                        IsReadOnly="True" />
                    <!--  Coluna CNPJ (editável)  -->
                    <controls:DataGridTextColumn Binding="{Binding CNPJ, Mode=TwoWay}" Header="CNPJ" />
                    <!--  Coluna NomeFantasia (editável)  -->
                    <controls:DataGridTextColumn Binding="{Binding NomeFantasia, Mode=TwoWay}" Header="Nome Fantasia" />
                    <!--  Coluna para o botão de remoção  -->
                    <controls:DataGridTemplateColumn Header="Ações">
                        <controls:DataGridTemplateColumn.CellStyle>
                            <Style TargetType="controls:DataGridCell">
                                <Setter Property="Template">
                                    <Setter.Value>
                                        <ControlTemplate TargetType="controls:DataGridCell">
                                            <Grid Background="{TemplateBinding Background}">
                                                <ContentPresenter />
                                            </Grid>
                                        </ControlTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>
                        </controls:DataGridTemplateColumn.CellStyle>
                        <controls:DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <Button>
                                    <FontIcon Glyph="&#xE74D;" />
                                </Button>
                            </DataTemplate>
                        </controls:DataGridTemplateColumn.CellTemplate>
                    </controls:DataGridTemplateColumn>
                </controls:DataGrid.Columns>
            </controls:DataGrid>
        </Border>
    </Grid>
</Grid>

` And the following ViewModel: `using System.Collections.ObjectModel; using System.Collections.Specialized; using System.ComponentModel; using System.Diagnostics; using CommunityToolkit.Mvvm.ComponentModel; using CommunityToolkit.Mvvm.Input; using EVT.Models;

namespace EVT.ViewModels;

public partial class SindicatoViewModel : ObservableObject
{
[ObservableProperty]
private ObservableCollection _sindicatos;

public SindicatoViewModel()
{
    Sindicatos = new ObservableCollection<Sindicato> { 
        new() { Id = 1, CNPJ = "12.345.678/0001-90", NomeFantasia = "Tech Innovators Ltda."  },
        new() { Id = 2, CNPJ = "23.456.789/0001-01", NomeFantasia = "Gourmet Delights SA"  },
        new() { Id = 3, CNPJ = "34.567.890/0001-12", NomeFantasia = "Eco Solutions ME"  },
        new() { Id = 4, CNPJ = "45.678.901/0001-23", NomeFantasia = "Fashion Forward Inc."  },
        new() { Id = 5, CNPJ = "56.789.012/0001-34", NomeFantasia = "Health & Wellness Co."  },
    };

    foreach (var sindicato in Sindicatos)
    {
        sindicato.PropertyChanged += OnSindicatoPropertyChanged;
    }

    Sindicatos.CollectionChanged += OnCollectionChanged;
}

[RelayCommand]
private void RemoveSindicato(Sindicato sindicato)
{
    if (sindicato != null)
    {
        Sindicatos.Remove(sindicato);
        // Atualize o banco de dados aqui, se necessário
        Debug.WriteLine($"Sindicato com Id {sindicato.Id} foi removido.");
    }
}

private void OnSindicatoPropertyChanged(object? sender, PropertyChangedEventArgs e)
{
    if (sender is Sindicato sindicato)
    {
        // Atualize o banco de dados aqui
        Debug.WriteLine($"Propriedade {e.PropertyName} do sindicato com Id {sindicato.Id} foi alterada para {((Sindicato)sender).NomeFantasia}");
    }
}

private void OnCollectionChanged(object? sender, NotifyCollectionChangedEventArgs e) 
{
    if (e.NewItems != null)
    {
        foreach (Sindicato newItem in e.NewItems)
        {
            newItem.PropertyChanged += OnSindicatoPropertyChanged;
        }
    }

    if (e.OldItems != null)
    {
        foreach (Sindicato oldItem in e.OldItems)
        {
            oldItem.PropertyChanged -= OnSindicatoPropertyChanged;
        }
    }

    // Aqui você pode detectar as alterações e atualizar a interface do usuário ou realizar outras ações necessárias
    switch (e.Action)
    {
        case NotifyCollectionChangedAction.Add:
            Debug.WriteLine("Um item foi adicionado.");
            break;
        case NotifyCollectionChangedAction.Remove:
            Debug.WriteLine("Um item foi removido.");
            break;
        case NotifyCollectionChangedAction.Replace:
            Debug.WriteLine("Um item foi substituído.");
            break;
        case NotifyCollectionChangedAction.Move:
            Debug.WriteLine("Um item foi movido.");
            break;
        case NotifyCollectionChangedAction.Reset:
            Debug.WriteLine("A coleção foi redefinida.");
            break;
    }
}

}
`
I tried to bind the button in several ways but was unsuccessful.
How to link the button to the viewModel's RelayCommand RemoveSindicatoCommand?