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

问题描述

我有一个使用简单绑定附加项目源的组合框.加载组合框后，有没有办法刷新此绑定?

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

您可以使用绑定表达式:

You can use binding expressions:

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

但是正如 Blindmeis 指出的，您还可以触发更改通知，如果您的集合实现了 INotifyCollectionChanged(例如在 ObservableCollection 中实现)它会同步，所以你不需要做任何这些.

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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