我用以下代码在XAML中创建了一个CheckedListBox:
<ListBox Height="340" ItemsSource="{Binding Sections}" SelectedItem="{Binding SelectedSection}">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding IsChecked}" Content="{Binding Path=Item}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
它绑定到此集合:
public ObservableCollection<CheckedListItem<String>> Sections { get; set; }
private CheckedListItem<String> _selectedSection;
public CheckedListItem<String> SelectedSection
{
get { return _selectedSection; }
set
{
_selectedSection = value;
RaisePropertyChanged("SelectedSection");
}
}
CheckedListItem类的代码如下:
public class CheckedListItem<T> : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private bool isChecked;
private T item;
public CheckedListItem()
{ }
public CheckedListItem(T item, bool isChecked = false)
{
this.item = item;
this.isChecked = isChecked;
}
public T Item
{
get { return item; }
set
{
item = value;
if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("Item"));
}
}
public bool IsChecked
{
get { return isChecked; }
set
{
isChecked = value;
if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventArgs("IsChecked"));
}
}
}
我尝试在代码的_selectedSection = value;部分设置断点,但当我选择/取消选择CheckedListBox中的项目时,它从未被触发。
我的问题是每次选择/取消选择时如何获取所选项目?
谢谢