Which of the following determines whether the user pressed a key that is not a number or the Backspace key? a. If (e.KeyChar < "0" AndAlso e.KeyChar > "9") OrElse e.KeyChar <> ControlChars.Back Then b. If e.KeyChar < "0" AndAlso e.KeyChar > "9" OrElse e.KeyChar <> ControlChars.Back Thenc. If (e.KeyChar < "0" OrElse e.KeyChar > "9") AndAlso e.KeyChar <> ControlChars.Back Then d. If e.KeyChar < "0" OrElse e.KeyChar > "9" AndAlsoe.KeyChar <> ControlChars.Back Then

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Which of the following determines whether the user pressed a key that is not a number or the Backspace key?

a. If (e.KeyChar < "0" AndAlso e.KeyChar > "9") OrElse e.KeyChar <> ControlChars.Back Then

b. If e.KeyChar < "0" AndAlso e.KeyChar > "9" OrElse e.KeyChar <> ControlChars.Back Then
c. If (e.KeyChar < "0" OrElse e.KeyChar > "9") AndAlso e.KeyChar <> ControlChars.Back Then

d. If e.KeyChar < "0" OrElse e.KeyChar > "9" AndAlso
e.KeyChar <> ControlChars.Back Then

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