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by Jeff Handley via Jeff Handley on 4/1/2009 5:33:11 PM
With the Silverlight 3 Beta SDK and .NET RIA Services, a lot of people are starting to utilize the System.ComponentModel.DataAnnotations library to add validation metadata to their entities. Something that has tripped up some people is the use of exceptions for validation errors, where Visual Studio breaks with a user unhandled exception. As Keith Jones reported, Silverlight 3 uses exceptions to notify controls when validation has failed. This means that many users will see Visual Studio brea
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