我正在使用带有controlTemplate的ListBox来显示带有ListBoxItem的RadioButton。 这里我想将RadioButton的IsChecked属性设置为true,并为此执行必要的wpf绑定。下面是XAML隐藏类此如何绑定ControlTemplate中的RadioButton
<ListBox ItemsSource="{Binding Products}" DisplayMemberPath="ProductName" Grid.Column="0" Width="250" HorizontalAlignment="Left" Margin="0,2,0,30" AlternationCount="2">
<ListBox.ItemContainerStyle>
<Style TargetType="{x:Type ListBoxItem}">
<Setter Property="Margin" Value="2"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<RadioButton IsChecked="{Binding IsRadioButtonChecked, RelativeSource={RelativeSource TemplatedParent}, Mode=TwoWay}">
<ContentPresenter></ContentPresenter>
</RadioButton>
</ControlTemplate>
</Setter.Value>
</Setter>
<!--Alternate Style Indexing-->
<Style.Triggers>
<Trigger Property="ItemsControl.AlternationIndex" Value="1">
<Setter Property="Background" Value="LightGray"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
代码是
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
this.DataContext = new ListStylesViewModel();
}
}
ListStyleViewModel类是
public class ListStylesViewModel : INotifyPropertyChanged
{
private string prodName;
private List<Products> products;
private bool isChecked = true;
public ListStylesViewModel()
{
ListStyleModel model = new ListStyleModel();
this.Products = model.GetProducts();
}
public string ProductName
{
get
{
return this.prodName;
}
set
{
this.prodName = value;
this.OnPropertyChanged("ProductName");
}
}
public List<Products> Products
{
get
{
return this.products;
}
set
{
this.products = value;
this.OnPropertyChanged("Products");
}
}
public bool IsRadioButtonChecked
{
get
{
return this.isChecked;
}
set
{
this.isChecked = value;
this.OnPropertyChanged("IsChecked");
}
}
#region
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string pptName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(pptName));
}
}
#endregion
请指教一下我做错了吗?
我认为主要的问题是,你的'IsRadioButtonChecked'的内部实现'ListStylesViewModel'应该在'Products'内部实现,所以在整个列表框中为每个项目跟踪检查状态,而不是一次。 – grek40
我希望RadioButton仅在ListStyleViewModel中实现,现在得到了答案(需要在此控件上设置DataContext) – Arvind