Validation framework in C#?

Question

In the java world there is the bean validation framework JSR-303 which is a nicely well thought out strategy for performing data validation in both the presentation and persistence layers of an application. It covers a lot of things, including validation of whole graph models, validation domain grouping, i18n, etc.

I have failed to find any data model validation frameworks in C#. Are there anything similar to JSR-303 in C#?

Answer 1

You can try fluent validation:

http://fluentvalidation.codeplex.com/

Answer 2

There is the Enterprise Library Validation block. http://msdn.microsoft.com/en-us/library/ff648831.aspx

It may not do some of the specific items you are asking about (i18n) out of the box, but it fits the bill for many other use cases.

Also, is free to use and has source code available.