<ListBox Grid.Row="0" ItemsSource="{Binding DataComponentItems}" HorizontalContentAlignment="Stretch">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="*"/>
                            <ColumnDefinition Width="*"/>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>
                        <Label Content="{Binding Name}" HorizontalAlignment="Left" Grid.Column="0"/>
                        <Label Content="{Binding LastName}" HorizontalAlignment="Left" Grid.Column="1"/>
                        <Label Content="{Binding Age}" HorizontalAlignment="Left" Grid.Column="2"/>
                    </Grid>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>