Use the Error Handler builder to catch and handle any unhandled error or all errors encountered when the model runs.
- Add an Error Handler builder to the model.
- Assign the builder to an action.
- Specify one of the following builder inputs:
Add more Error Handler builders to the model.
- Try Action
This is the action for the builder to monitor, for example, the loading of a particular page.
- Catch Action
This is the action for the builder to initiate if an exception occurs. For example, you can invoke a method or display a specific error-related page.
With multiple Error Handler builders in a model, you can monitor exceptions at various levels. For example, you can assign as the try action a page action, a method action, or an individual action in an action list.
To work with a specific type of exception in a method, in the Error Handler builder, specify an Exception Class input.
The indirect reference widget for this builder input allows you to select a Java class in your project. This technique allows you to assign multiple Error Handler builders to multiple exceptions on the same method or model.
To catch and handle any unhandled errors encountered when the model is run, set Catch all Errors.
Parent topic: Handling errors in web applications: wpf7
About handling errors for individual model actions: wpf7
Error Handler builder: wpf7