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code to alert that if field a has text then field b must also have text

shaz0503 asked
Last Modified: 2012-05-11

Playing with a new Db and need something similar to the code for cascading combo boxes.

Field 1 [Destination country 1]
Field 2 [Country 1]
Field 3 [Destination City]

Where there is data entered in Field 1 then there must also be data entered to fields 2 and 3...

How do I enusre a user enters data in fields 2 and 3  and get a message box to prompt...

All fields are free text

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