Arbitrary length bitfields?

[C# Programming]

I want to create a structure where the elements are bitfields of arbitrary length - e.g. 12 bits followed by 4 bits which would be used as a union with an array but cannot see a neat with to do this.
Any suggestions?
Thanks.

Elaine http://www.barakasoft.com/script/Forums/Images/rose.gif

Visit http://www.notreadytogiveup.com/[^ (http://www.notreadytogiveup.com/)] and do something special today.