INotifyDataErrorInfo.GetErrors Method
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Gets the validation errors for a specified property or for the entire entity.
Namespace: System.ComponentModel
Assembly: System (in System.dll)
Syntax
Function GetErrors ( _
propertyName As String _
) As IEnumerable
IEnumerable GetErrors(
string propertyName
)
Parameters
- propertyName
Type: System..::.String
The name of the property to retrieve validation errors for; or nullNothingnullptra null reference (Nothing in Visual Basic) or Empty, to retrieve entity-level errors.
Return Value
Type: System.Collections..::.IEnumerable
The validation errors for the property or entity.
Remarks
This method returns an IEnumerable that can change as asynchronous validation rules finish processing. This enables the binding engine to automatically update the user interface validation feedback when errors are added, removed, or modified.
The return value can change to a different IEnumerable, or it can reuse a previously returned IEnumerable and change its contents. Any changes to the return value should raise the ErrorsChanged event, even if the return value implements INotifyCollectionChanged.
Examples
For an example of an implementation of this method, see the INotifyDataErrorInfo class overview.
Version Information
Windows Phone OS
Supported in: 8.1, 8.0, 7.1
Platforms
Windows Phone
See Also
Reference
INotifyDataErrorInfo Interface
System.ComponentModel Namespace