如何强制WPF绑定刷新？ [英] How to force a WPF binding to refresh?

问题描述

我有使用简单的绑定附有项目源的组合框。有什么办法来刷新这个绑定，一旦组合框加载？

I have got a combo box with items source attached using simple binding. Is there any way to refresh this binding once combo box is loaded?

推荐答案

您可以使用绑定前pressions：

You can use binding expressions:

private void ComboBox_Loaded(object sender, RoutedEventArgs e)
{
    ((ComboBox)sender).GetBindingExpression(ComboBox.ItemsSourceProperty)
                      .UpdateTarget();
}

但作为Blindmeis指出还可以火更改通知，进一步，如果你的集合实现 INotifyCollectionChanged （例如，在实施的ObservableCollection＆LT; T＆GT; ）。它会同步，这样你就不需要做任何的这种

But as Blindmeis noted you can also fire change notifications, further if your collection implements INotifyCollectionChanged (for example implemented in the ObservableCollection<T>) it will synchronize so you do not need to do any of this.

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