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                            wpf 拿到某個control的multibinding以及其中每個Binding
  

1. 拿到multibinding

 ? ?MultiBindingExpression?mbe=BindingOperations.GetMultiBindingExpression((childasTextBox),TextBox.TextProperty);

  

2. 拿到其中每個Binding的Path

 ? ??Bindingbd=mbe.ParentMultiBinding.Bindings[0]asBinding;

??????????????bindingPath=bd.Path.Path;

  

3. 拿到其中的ValidationRule

 ? ?ValidationRule?vr=mbe.ParentMultiBinding.ValidationRules[0];

  

4. 更新MultiBinding

 ? ??mbe.UpdateSource();

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