Chapter 7. Validating Input

Key concepts in this chapter are:

  • Identifying various forms of input

  • Using Windows Forms input-validation features

  • Using ASP.NET validation controls

  • Using regular expressions and Parse commands to validate data

As long as there have been computers, there has been computer input in one form or another. A bank of switches, for example, was used to provide input into the MITS Altair 8800 (the first personal computer) to perform simple computer tasks; the output displayed as a series of blinking lights.

Input has evolved along with the methods of providing input. Today you can use a variety of means to enter data into your computer, including keyboard, mouse, pen, voice, bar-code scanner, or brake-pedal pressure (as input to ...

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