Write an OnUpdateError event handler to respond to error conditions that arise when the provider applies a client dataset's updates. The OnUpdateError event handler is called for each record that can't be updated.

OnUpdateError differs from the OnReconcileError event in that OnUpdateError occurs during the updating process, while OnReconcileError occurs after all updating is complete. Thus, update errors corrected in the OnUpdateError event handler are immediately reapplied, and, if the reapplication is successful, do not count toward the maximum number of errors specified to the ApplyUpdates method. This differs from update errors corrected in an OnReconcileError event handler, which must be explicitly reapplied by another call to ApplyUpdates. 

 

ApplyUpdates 

OnReconcileError 

NewValue 

OldValue 

CurValue 

Reconciling Update Errors