Assume that the end user did not select a real option from a combo box and after he clicked on the "Save" button he received an error message that asks him to select a real option What do we call this process and why is it required?

Assume that the end user did not select a real option from a combo box and after he clicked on the "Save" button he received an error message that asks him to select a real option What do we call this process and why is it required?

Programming with Microsoft Visual Basic 2017

8th Edition

ISBN:9781337102124

Author:Diane Zak

Publisher:Diane Zak

Chapter3: Coding With Variables, Named Constants, And Calculations

Section: Chapter Questions

Problem 16RQ

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Assume that the end user did not select a real option from a combo box and after he clicked on the "Save" button he received an error message that asks him to select a real option What do we call this process and why is it required?

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