Data binding provides automatic updates from a source to a target (and vice versa in a two way binding). Some of these values are provided by some user of the system; consequently, not all values are valid. The binding system should have ways to catch such errors and allow the application to communicate to the user those errors. This is the role of data validation. In this recipe, we'll look at the validation support in data binding scenarios.
Make sure Visual Studio is up and running.
We'll create a simple entry form that validates its inputs according to some application-specific rules.
Person. Implement ...