Defines members that data entity classes can implement to provide custom synchronous and asynchronous validation support.
public interface class INotifyDataErrorInfopublic interface INotifyDataErrorInfotype INotifyDataErrorInfo = interfacePublic Interface INotifyDataErrorInfoThis interface enables data entity classes to implement custom validation rules and expose validation results asynchronously. This interface also supports custom error objects, multiple errors per property, cross-property errors, and entity-level errors. Cross-property errors are errors that affect multiple properties. You can associate these errors with one or all of the affected properties, or you can treat them as entity-level errors. Entity-level errors are errors that either affect multiple properties or affect the entire entity without affecting a particular property.
Properties HasErrorsGets a value that indicates whether the entity has validation errors.
Methods GetErrors(String)Gets the validation errors for a specified property or for the entire entity.
Events ErrorsChangedOccurs when the validation errors have changed for a property or for the entire entity.
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