1
在設置Observable Collection
的數據綁定時,在以下上下文中:Implementing CollectionChanged Handler in XAML with WPF所有綁定工作正常,但我發現除了更改ListBox中由ItemsSource定義的屬性之外,我還是具有類似於代碼手動更新UI的可視容器:ObservableCollection <T> WPF綁定顯示不更新
XAML:
<Grid DataContext="{Binding ElementName=PollPublicStockMainWindow}">
<ListBox Height="132" HorizontalAlignment="Left" Name="lbFiles"
VerticalAlignment="Top" Width="167"
Margin="{StaticResource ConsistemtMargins}"
ItemsSource="{Binding LbItems}">
<ListBox.InputBindings>
<KeyBinding Key="Delete" Command="local:MainWindow.DeleteEntry"/>
</ListBox.InputBindings>
</ListBox>
</Grid>
代碼隱藏:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
LbItems = new ObservableCollection<string>();
LbItems.CollectionChanged += lbFiles_CollectionChanged;
}
private void lbFiles_CollectionChanged(object sender,
System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
MemoryPersistentStorageBridge memBridge = GetPersistentStorageBridge;
List<string> newFileList = new List<string>();
foreach (string str in LbItems) {
DoSomethingWithNewString(str); //these 2 lines are always paired?
lbFiles.Items.Add(str); // this should NOT be needed
}
}
}
我是否缺少綁定?