Summary
In this chapter, we have examined the Validation API and seen how we can review or create rulesets and rules. We have also seen how rules can be validated to create issues automatically and how issues can be created in code as the result of custom validation code.
In the next chapter, we are going to start building a Visio VSTO 2012 add-in that we can use to analyze existing rules, or create new ones more easily. You are also going to switch from VBA to using C# in Visual Studio 2012, so that you can have a proper development tool to use.