Recently I've been asked several questions on the TabItem tutorial I've done some time ago. Because I haven't had any sources containg the code at hand I've finally found the time to refresh my memory and cobble together a sample.
Below sample is just a proof of concept. The code shouldn't be looked at as an example of good design and was prepared only to show the validation of tab items. In a production code ViewModels wouldn't be created in the view and command would be used instead of on click event for the button. Event aggregator, message bus or some other pattern could be used for exchange of information between the view models. Please treat this code as a very rough scaffolding. The sample follows the tutorial introduced some time ago, hence no refactoring or cleaning has been done.
Previous tutorials:
TabItem Validation, Part 1
TabItem Validation, Part 2
Code:
https://github.com/simonkatanski/ValidationSample
