I too do not understand what you are driving at. I think it may be one of two scenarios:
1. You want to create a customised button control to add to both pages (meaning the same members are available to both pages).
2. You want one button when clicked on "customer.aspx" to do something on "products.aspx".
If its 1, listen to what samjudson
said, create a user control.
If its 2, listen to what planoie
said, you cant have two pages loaded at the same (or at least to my knowledge - which, to be fair is limited).
Before asking for code, it may be preferable to ensure you are asking your question as explicitly as possible, giving as much info to those you are asking for help ;)
The Developing Developer
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