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INotifyDataErrorInfo Interface

.NET Framework 4.5

Defines members that data entity classes can implement to provide custom synchronous and asynchronous validation support.

Namespace:  System.ComponentModel
Assembly:  System (in System.dll)

public interface INotifyDataErrorInfo

The INotifyDataErrorInfo type exposes the following members.

Public propertySupported by Portable Class LibrarySupported in .NET for Windows Store appsHasErrorsGets a value that indicates whether the entity has validation errors.

Public methodSupported by Portable Class LibrarySupported in .NET for Windows Store appsGetErrorsGets the validation errors for a specified property or for the entire entity.

Public eventSupported by Portable Class LibrarySupported in .NET for Windows Store appsErrorsChangedOccurs when the validation errors have changed for a property or for the entire entity.

This 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.

.NET Framework

Supported in: 4.5

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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