Getting Build Date and Time from Assembly Version December 28, 2010

When you use the following format for Assembly Version Attribute 
[assembly: AssemblyVersion("1.0.*")] the build number and revision are automatically generated for you when building the application.

It turns out that that a formula based on DateTime.Now is used to generate those numbers.

So to get the DateTime time stamp when the assembly was build all you have to do is:

Code Snippet

1. Version v = ParseVersionNumber(Assembly.GetExecutingAssembly());
2.            return new DateTime((v.Build – 1) * TimeSpan.TicksPerDay + v.Revision * TimeSpan.TicksPerSecond * 2).AddYears(1999);