This is a perfect example of where n-tier design will help. By moving all your rules to validation objects, the code is centralized. There are some whitepapers on www.comcodebook.com that may help.

>Hi
>
>My current application consists of many rules/validation (ie cannot do A unless B has been done. Cannot to D unless B comes from A - things like that), these rules are becoming very cluttered as they are spread amongst Methods amongst Forms..
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>What I need to know is how people handle lots of complex rules and how they tie them in. What I am trying to achieve is an effective method that appears more logical than what it actually is, and is easy to maintain/amend.
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>Any ideas/thoughts.
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>I know I haven't gone into much detail, but I can if necessary
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>Thanks
>Kev