INotifyDataErrorInfo Interface
Definition
Important
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Defines members that data entity classes can implement to provide custom synchronous and asynchronous validation support.
public interface class INotifyDataErrorInfo/// [Windows.Foundation.Metadata.ContractVersion(Microsoft.UI.Xaml.WinUIContract, 65536)]
/// [Windows.Foundation.Metadata.Guid(250004172, 10046, 22141, 188, 10, 29, 216, 126, 229, 30, 186)]
struct INotifyDataErrorInfo[Windows.Foundation.Metadata.ContractVersion(typeof(Microsoft.UI.Xaml.WinUIContract), 65536)]
[Windows.Foundation.Metadata.Guid(250004172, 10046, 22141, 188, 10, 29, 216, 126, 229, 30, 186)]
public interface INotifyDataErrorInfoPublic Interface INotifyDataErrorInfo- Attributes
Remarks
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.
Properties
| HasErrors |
Gets 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
| ErrorsChanged |
Occurs when the validation errors for the property or entity change. |