OperationBase.MarkErrorAsHandled Method
[WCF RIA Services Version 1 Service Pack 2 is compatible with either .NET framework 4 or .NET Framework 4.5, and with either Silverlight 4 or Silverlight 5.]
Specifies that an error encountered in an operation is handled.
Namespace: System.ServiceModel.DomainServices.Client
Assembly: System.ServiceModel.DomainServices.Client (in System.ServiceModel.DomainServices.Client.dll)
| Exception | Condition |
|---|---|
| InvalidOperationException | The HasError property is false. |
You call this method when you have taken the required steps to recover from an error in a domain operation. By calling this method, you indicate that the error will not be thrown as an exception. If this method is not called for a failed operation, the exception specified in the Complete method will be thrown.
The System#ComponentModel#INotifyPropertyChanged#PropertyChanged event is raised for the IsErrorHandled property.
The following example shows a callback method for a submit operation that checks for errors and calls the MarkErrorAsHandled method.
Private Sub SaveButton_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) _customerContext.SubmitChanges(AddressOf OnSubmitCompleted, Nothing) End Sub Private Sub RejectButton_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) _customerContext.RejectChanges() CheckChanges() End Sub Private Sub CustomerGrid_RowEditEnded(ByVal sender As System.Object, ByVal e As System.Windows.Controls.DataGridRowEditEndedEventArgs) CheckChanges() End Sub Private Sub CheckChanges() Dim changeSet = _customerContext.EntityContainer.GetChanges() ChangeText.Text = changeSet.ToString() Dim hasChanges = _customerContext.HasChanges SaveButton.IsEnabled = hasChanges RejectButton.IsEnabled = hasChanges End Sub Private Sub OnSubmitCompleted(ByVal so As SubmitOperation) If (so.HasError) Then MessageBox.Show(String.Format("Submit Failed: {0}", so.Error.Message)) so.MarkErrorAsHandled() End If CheckChanges() End Sub