Folks, I am binding the properties of an EF4 created entity to a screen full of controls in the usual way. The default validation behaviour is acceptable for now, as exceptions from the setters or my validators put a red border around the guilty controls.
I have other controls like an error icon and the Save button which I'd like to bind to the validity and consistency of the *whole* entity. Is there some plumbing in place that can I use to bind controls to the overall state of the entity? For example, the Save button is disabled if there are 1 or more property errors. Another thing I have to consider is giving an indication in the UI of any controls that have had their values changed. I'm wondering if there is a simple way of making controls automatically change colour when their value becomes changed/dirtied via binding. (Changing control colours is not normally a polite thing to do in the UI, but it would be okay for my demo). Cheers, Greg
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