【发布时间】：2010-11-03 23:41:39
【问题描述】：
在以下代码中，用户从 ComboBox 中选择一个客户，该客户的信息显示在框中。
现在我也想让 RadioButtons 使用相同的功能。我有 RadioButtons 来显示客户的 ObservableCollection，但我怎样才能让 IsChecked 工作，即 RadioButtons 的 SelectedItem 相当于什么？
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>
视图模型：
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];
}
}
}
更新：
我也从 Thomas 那里尝试过，但它仍然无法将 IsChecked 与 IsSelected 连接起来：
<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>
【问题讨论】：
标签： wpf xaml radio-button