Under the part "Make your application temper-resistant" Tim Bray
advises:

"The most obvious mechanism is to use a lightweight hash function,
such as CRC32, and build a hash of your application’s code. You can
then compare this checksum with a known good value. You can find the
path of your application’s files by calling
context.GetApplicationInfo() — just be sure not to compute a checksum
of the file that contains your checksum! "

It's the last part I have a problem with.  How do I compute the CRC32
of the app that already contains the said CRC32?????

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