Adding multiple byte arrays in c# [migrated]

Posted by James P. Wright on Programmers See other posts from Programmers or by James P. Wright
Published on 2012-10-17T22:53:23Z Indexed on 2012/10/17 23:19 UTC
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I'm working on a legacy system that uses byte arrays for permission levels.
Example:
00 00 00 00 00 00 00 01 means they have "Full Control"
00 00 00 00 00 00 00 02 means they have "Add Control"
00 00 00 00 00 00 00 04 means they have "Delete Control"

So, if a User has "00 00 00 00 00 00 00 07" that means they have all 3 (as far as it has been explained to me).

Now, my question is that I need to know how to get to "0x07" when creating/checking records.
I don't know the syntax for actually combining 0x01, 0x02 and 0x04 so that I come out with 0x07.

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