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I am developing the excel add-in with and I want to prompt the error message when the user fill the same data in one sheet. Please give me any suggestion.Thanks.
Posted 17-Dec-12 17:41pm
Lina99 18-Dec-12 2:24am
I have tried to use Excel validation but the validation is just applied for a certain range, not whole sheet. Maybe you can try to use some .NET Excel components to get help.

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