Как заставить RadioButtons работать как ComboBox в шаблоне MVVM?

Question

В следующем коде пользователь выбирает клиента из ComboBox, и информация о нем отображается в поле.

Теперь я также хочу, чтобы RadioButtons работал с той же функциональностью. У меня есть RadioButtons для отображения ObservableCollection клиентов, но как я могу получить IsChecked, т. Е. Что такое эквивалент SelectedItem для RadioButtons?

XAML:

<Window.Resources> 

    <DataTemplate x:Key="CustomerShowTemplate"> 
     <Border CornerRadius="5" 
       Background="#eee" 
       Padding="5" 
       HorizontalAlignment="Left"> 
      <StackPanel> 
       <StackPanel Orientation="Horizontal"> 
        <TextBlock FontSize="14" FontWeight="Bold" Text="{Binding FirstName}"/> 
        <TextBlock Text=" "/> 
        <TextBlock FontSize="14" FontWeight="Bold" Text="{Binding LastName}"/> 
       </StackPanel> 
       <TextBlock Text="{Binding Path=HireDate, 
        StringFormat='Hired on {0:MMM dd, yyyy}'}"/> 
      </StackPanel> 
     </Border> 
    </DataTemplate> 

    <DataTemplate x:Key="CustomerComboBoxTemplate"> 
     <StackPanel Orientation="Horizontal"> 
      <TextBlock Text="{Binding FirstName}"/> 
      <TextBlock Text=" "/> 
      <TextBlock Text="{Binding LastName}"/> 
     </StackPanel> 
    </DataTemplate> 

    <DataTemplate x:Key="CustomerRadioButtonTemplate"> 
     <RadioButton GroupName="CustomerRadioButtonGroup" 
      IsChecked="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=IsSelected}"> 
      <TextBlock Text="{Binding LastName}"/> 
     </RadioButton> 
    </DataTemplate> 

</Window.Resources> 

<DockPanel LastChildFill="False" Margin="10"> 

    <ContentControl 
     DockPanel.Dock="Top" 
     Margin="0 0 0 10" 
     Content="{Binding SelectedCustomer}" 
     ContentTemplate="{StaticResource CustomerShowTemplate}"/> 

    <StackPanel 
     DockPanel.Dock="Top" 
     Margin="0 0 0 10"> 

     <ComboBox 
      ItemsSource="{Binding Customers}" 
      ItemTemplate="{StaticResource CustomerComboBoxTemplate}" 
      Margin="20" 
      HorizontalAlignment="Left" 
      SelectedItem="{Binding SelectedCustomer, Mode=TwoWay}"/> 

     <ListBox 
      ItemsSource="{Binding Customers}" 
      ItemTemplate="{StaticResource CustomerRadioButtonTemplate}" 
      SelectedItem="{Binding SelectedCustomer, Mode=TwoWay}"/> 


     <TextBlock Text="{Binding Customers.Count}"/> 


     <Button Content="Add Customer" Command="{Binding AddCustomerCommand}"/> 


    </StackPanel> 

</DockPanel> 

ViewModel:

using System; 
using System.Collections.ObjectModel; 
using TestSelectedItem234.Models; 

namespace TestSelectedItem234.ViewModels 
{ 
    public class MainViewModel : ViewModelBase 
    { 

     #region ViewModelProperty: Customers 
     private ObservableCollection<Customer> _customers = new ObservableCollection<Customer>(); 
     public ObservableCollection<Customer> Customers 
     { 
      get 
      { 
       return _customers; 
      } 

      set 
      { 
       _customers = value; 
       OnPropertyChanged("Customers"); 
      } 
     } 
     #endregion 

     #region ViewModelProperty: SelectedCustomer 
     private Customer _selectedCustomer; 
     public Customer SelectedCustomer 
     { 
      get 
      { 
       return _selectedCustomer; 
      } 

      set 
      { 
       _selectedCustomer = value; 
       OnPropertyChanged("SelectedCustomer"); 
      } 
     } 
     #endregion 

     #region ViewModelProperty: CustomerIsSelected 
     private bool _customerIsSelected; 
     public bool CustomerIsSelected 
     { 
      get 
      { 
       return _customerIsSelected; 
      } 

      set 
      { 
       _customerIsSelected = value; 
       OnPropertyChanged("CustomerIsSelected"); 
      } 
     } 
     #endregion 

     public MainViewModel() 
     { 
      LoadCustomers(); 

      CustomerIsSelected = false; 
     } 

     private void LoadCustomers() 
     { 
      _customers.Add(new Customer { FirstName = "Jim", LastName = "Smith", HireDate = DateTime.Parse("2007-12-31") }); 
      _customers.Add(new Customer { FirstName = "Jack", LastName = "Taylor", HireDate = DateTime.Parse("2005-12-31") }); 
      _customers.Add(new Customer { FirstName = "Jane", LastName = "Smith", HireDate = DateTime.Parse("2005-06-30") }); 
      _customers.Add(new Customer { FirstName = "Alice", LastName = "Jones", HireDate = DateTime.Parse("2005-08-23") }); 
      _customers.Add(new Customer { FirstName = "Mary", LastName = "Ashton", HireDate = DateTime.Parse("2005-12-22") }); 
      _customers.Add(new Customer { FirstName = "Joe", LastName = "Jones", HireDate = DateTime.Parse("2005-11-22") }); 
      _customers.Add(new Customer { FirstName = "Henry", LastName = "Smith", HireDate = DateTime.Parse("2005-12-11") }); 
      _customers.Add(new Customer { FirstName = "Allison", LastName = "Rodrigez", HireDate = DateTime.Parse("2004-12-14") }); 
      _customers.Add(new Customer { FirstName = "Angela", LastName = "Thompson", HireDate = DateTime.Parse("2003-03-14") }); 
      _customers.Add(new Customer { FirstName = "Shawna", LastName = "Quaker", HireDate = DateTime.Parse("2005-12-14") }); 

      SelectedCustomer = _customers[0]; 
     } 

    } 
} 

Обновление:

Я также попытался это от Томаса, но он по-прежнему не связывает IsChecked с IsSelected:

<ListBox ItemsSource="{Binding Customers}"> 
    <ListBox.ItemContainerStyle> 
     <Style TargetType="{x:Type ListBoxItem}"> 
      <Setter Property="Template"> 
       <Setter.Value> 
        <ControlTemplate TargetType="{x:Type ListBoxItem}"> 
         <RadioButton Content="{Binding FirstName}" IsChecked="{Binding IsSelected, RelativeSource={x:Static RelativeSource.TemplatedParent}}"/> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
     </Style> 
    </ListBox.ItemContainerStyle> 
</ListBox> 

Answer 1

ItemsControl не обладает свойством SelectedItem, вы должны использовать ListBox вместо

Этот пример работает отлично :

<Page 
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    xmlns:sys="clr-namespace:System;assembly=mscorlib"> 
    <Page.Resources> 
    <x:Array x:Key="stringList" Type="sys:String"> 
     <sys:String>Hello</sys:String> 
     <sys:String>World</sys:String> 
     <sys:String>!</sys:String> 
    </x:Array> 
    </Page.Resources> 
    <Grid> 
    <ListBox ItemsSource="{StaticResource stringList}"> 
     <ListBox.ItemContainerStyle> 
     <Style TargetType="{x:Type ListBoxItem}"> 
      <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="{x:Type ListBoxItem}"> 
       <RadioButton Content="{Binding}" IsChecked="{Binding IsSelected, RelativeSource={x:Static RelativeSource.TemplatedParent}}"/> 
       </ControlTemplate> 
      </Setter.Value> 
      </Setter> 
     </Style> 
     </ListBox.ItemContainerStyle> 
    </ListBox> 
    </Grid> 
</P