Requried validation on submit button click

How can I validate inputs against the required validation for the controls when a submit button is开发者_开发问答 pressed?

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Validation is built into the WPF DataBinding model. Start here for more information.

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there is an awsome validation engine I am using called FluentValidation..its available on codeplex. its very easy to setup and for the most part really easy to use...

Fluent Validation on Codeplex