This is HALF answered in the MSDN library with an example function called IsValidEmail. Does anyone else think maybe it's time the example function (which developers are likely to copy-paste) was changed to closer represented what an email address can actually be? Sure, it matches firstname.lastname@example.org, or email@example.com... But how about firstname.lastname@example.org, or email@example.com, or firstname.lastname@example.org, or many other valid email addresses? The page http://msdn.microsoft.com/en-us/library/01escwtf.aspx has been updated for each new release of VisualStudio/.NET, but even the VS 2010/.NET4.0 one isn't much better!
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