Microsoft Windows Workflow Foundation 4.0 Cookbook

Handling errors

In this task, we are going to create a Sequence workflow with a TryCatch activity. There will be a dividend assigned with zero, and hence we can generate a divide-by-zero exception deliberately so that we can handle this error in a TryCatch activity.

How to do it...

1. Create a workflow project:

   Create a new Workflow Console Application and name it ErrorHandling.

2. Create a code workflow:

   Create a new class file and name it ErrorHandlingWorkflow.cs. Fill the file with the following code:

   using System; using System.Activities; using System.Activities.Statements; namespace ErrorHandling { public class ErrorHandlingWorkflow{ public Activity GetInstance() { Variable<int> divisor = new Variable<int>("divisor", 10); Variable<int> dividend = new ...