Writing rules to validate diagrams in Visio 2010 – A worked example

Validating diagram construction in Visio 2010

Microsoft Visio 2010 Premium Edition introduced an extension to the Visio Type Library called the Validation API. This provides the capability to validate a Visio diagram to ensure that its construction complies with industry-standard or company –wide rules.

Organizations are able to use this new feature to encapsulate business logic as validation rules, grouped within rule sets.

Microsoft Visio 2010 Premium edition contains rule sets for use with Basic and Cross-Functional Flowcharts, BPMN Diagrams and SharePoint Workflow Designer diagrams.

This article describes how you can create your own rule sets and rules.

Arrays in Shapes

I was recently asked by my good friend John Marshall, the longest serving Visio MVP (see http://visio.mvps.org/ ), if I had any examples of using arrays in shapes, rather than having scores of Shape Data rows.  Indeed, I have used arrays in many shapes, and used the LOOKUP() and INDEX() ShapeSheet functions to extract discreet values, but I thought I would enhance an existing shape, the Pie chart master on the Charting shapes stencil to demonstrate a technique.

In this post, the screenshots are from Visio 2010, and I have used the Link Data to Shapes feature that was introduced in Visio 2007, but a similar effect can be done using the Database Wizard which has been part of Visio since version 4.1 back in 1997.

I started a new Business Charts and Graphs diagram, and dragged a dropped a Pie chart master on to the page.  This shape allows for the user to enter values for 1 to 10 pie slices by use of the right mouse menu.