I need assistance using a Button to calculate formulas. Each Tab in my
TabControl has two ListBoxes on them. I need to know how to calculate
formulas after they have been selected from the ListBoxes. Thank you, Drew
Leon.

Drew,

Forgive me but I don't see the problem.

ButtonClick event
Dim myresult as Double = CDbl(textbox1.text) * Cdbl(textbox2.Text)

Cor

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