Calling Web Services to Validate Data in Visual Studio LightSwitch

Very often in business applications we need to validate data through another service. I’m not talking about validating the format of data entered – this is very simple to do in LightSwitch — I’m talking about validating the meaning of the data. For instance, you may need to validate not just the format of an… Read more

Validating Collections of Entities (Sets of Data) in LightSwitch

One of the many challenging things in building n-tier applications is designing a validation system that allows running rules on both the client and the server and sending messages and displaying them back on the client. I’ve built a couple application frameworks in my time and so I know how tricky this can be. I’ve… Read more