How to Add and Populate a Catch Exception Block

The Catch Exception block represents an exception handler. Catch Exception blocks are attached to the end of a Scope shape in Orchestration Designer. You can attach as many Catch Exception blocks as you need.

You can set up exception handlers to handle different kinds of exceptions. On each exception handler, you specify an exception type, which must be either a fault message or an object derived from the class System.Exception. If you do not specify an exception type, the exception block will be treated as a general exception handler, and can catch exceptions that do not derive from System.Exception.

If an exception is thrown that matches the specified type in an exception handler, that exception handler will be called. If some other exception is thrown, it will be handled by the default exception handler.

To add a Catch Exception block

1. Right-click the Scope shape to which you want to add a Catch Exception block, and then click New Exception Handler.

   A Catch Exception block is added to the orchestration immediately following the associated Scope shape.

2. In the Properties window, specify the following properties:

   Property	Description
   Exception Object Name	Assigns a name to the exception object caught by the exception handler.
   Exception Object Type	Determines the object type (derived from System.Exception) that this exception handler will catch.

3. Inside the Catch Exception block, add shapes to create the process for handling the exception.

See Also

Exceptions