INotifyDataErrorInfo.ErrorsChanged 事件
定义
当验证错误针对属性或整个实体更改时发生。Occurs when the validation errors have changed for a property or for the entire entity.
public:
event EventHandler<System::ComponentModel::DataErrorsChangedEventArgs ^> ^ ErrorsChanged;
event EventHandler<System.ComponentModel.DataErrorsChangedEventArgs> ErrorsChanged;
event EventHandler<System.ComponentModel.DataErrorsChangedEventArgs>? ErrorsChanged;
member this.ErrorsChanged : EventHandler<System.ComponentModel.DataErrorsChangedEventArgs>
Event ErrorsChanged As EventHandler(Of DataErrorsChangedEventArgs)
事件类型
注解
每当返回值发生更改时,实现类应在用户界面线程上引发此事件 GetErrors ,即使返回值实现也是如此 INotifyCollectionChanged 。The implementing class should raise this event on the user interface thread whenever the GetErrors return value changes, even if the return value implements INotifyCollectionChanged.