WP7 - Is it possible to selecte the item from list on button click time - xaml

Question

I want to select the list item when I click the button(Which is inside the list box for every row).
Now I have try like this:-
<ListBox Height="444"
ItemsSource="{Binding StudentDetails,Mode=TwoWay}"
HorizontalAlignment="Left" Margin="2,34,0,0"
Name="listBox1" VerticalAlignment="Top"
Width="476" BorderBrush="#00410D0D"
SelectedIndex="{Binding MemberPrivacy,Mode=TwoWay}"
SelectedItem="{Binding SelectedStudent, Mode=TwoWay}">
<ListBox.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Gray" Padding="5" BorderThickness="1">
<StackPanel Orientation="Horizontal">
<Border BorderBrush="Wheat" BorderThickness="1">
<Image Name="ListPersonImage" Source="{Binding PersonImage}" Height="100" Width="100" Stretch="Uniform" Margin="10,0,0,0"/>
</Border>
<TextBlock Text="{Binding FirstName}" Name="firstName" Width="200" Foreground="White" Margin="10,10,0,0" FontWeight="SemiBold" FontSize="22" />
<Image Height="50" Source="{Binding addImage}" HorizontalAlignment="Left" Name="image1" Stretch="Fill" VerticalAlignment="Top" Width="50" />
<Button Margin="-100,0,0,0" Height="80" Width="80" DataContext="{Binding DataContext, ElementName=listBox1}" Command="{Binding addPerson}" >
<Button.Background>
<ImageBrush ImageSource="{Binding addImage, Converter={StaticResource pathToImageConverter}}" Stretch="Fill" />
</Button.Background>
</Button>
</StackPanel>
</Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
My View Model:-
public ListBoxEventsViewModel()
{
addPerson = new ReactiveAsyncCommand();
addPerson.Subscribe(x =>
{
MessageBox.Show("Test Button Selected..");
});
}
Here I can show the message box when I click the button. But I can not select the list item. Please let me know to solve this problem.
Thanks in advance.
View Model:-
List box selected Item:-
public ListBoxEventsModel _SelectedStudent;
public ListBoxEventsModel SelectedStudent
{
get { return _SelectedStudent; }
set
{
this.RaiseAndSetIfChanged(x => x.SelectedStudent, value);
MessageBox.Show("Selected index==>" + SelectedStudent.FirstName);
}
}
Here it showing the selected name when I click the list item. But this same thing I want to write it for the button(addImage)

Answer 1

Bind the SelectedItem on the ListBox to a "SelectedItem" property on the ViewModel.
eg SelectedItem="{Binding SelectedItem, Mode=TwoWay}"
then on the view model just add a property of SelectedItem, then you can just set that from in your subscribe.