I am working on a WPF application and following MVVM. In my view there is a grid view which contains different columns. One of these column is a ListBox. Now problem is that for the ListBox column, SelectedItem get works fine but set doesn't.

Here is my View code

<DataGrid ItemsSource="{Binding Items}" SelectedItem="{Binding SelectedItem}" SelectionMode="Single">
    <DataGrid.Columns>
        <DataGridTextColumn Binding="{Binding Name}" Header="Name" />
        <DataGridTemplateColumn Header="Actions">
            <DataGridTemplateColumn.CellTemplate>
                <DataTemplate>
                    <ListBox DisplayMemberPath="Name" ItemsSource="{Binding Actions}" SelectedItem="{Binding SelectedAction}" />
                </DataTemplate>
            </DataGridTemplateColumn.CellTemplate>
        </DataGridTemplateColumn>
    </DataGrid.Columns>
</DataGrid>

In my ViewModel, I have Main ViewModel class, which contains a list of Items. Item class contains name, a list of actions and selected action.

public class MyViewModel : INotifyOfPropertyChanged
{
    private ObservableCollection<Item> _items;
    public ObservableCollection<Item> Items
    {
        get { return _items?? (_items= new ObservableCollection<Item>); }
    }

    private Item _selectedItem;
    public Item SelectedItem
    {
        get { return _selectedItem; }
        set { _selectedItem= value; }
    }
}

public class Item : INotifyOfPropertyChanged
{
    public string Name;

    private ObservableCollection<string> _actions;
    public ObservableCollection<string> Actions
    {
        get { return _actions?? (_actions= new ObservableCollection<string>); }
    }

    private string _selectedAction;
    public string SelectedAction
    {
        get { return _selectedAction; }
        set { _selectedAction = value; }
    }
}

                    
                    

                        
                        c#
                        
                        wpf
                        
                        mvvm
                        
                        listbox
                        
                    

                    

                        
                        
                        
                        
                        
                        Edit
                        
                        
                        

                            
                        

                        
                        Report