Our 8^th laboratory activity we applied the key trapping in our program. We used key trapping for eliminating unacceptable keystroke. Key press to allow you to input Letters/Numbers.

We use this formula:

Select case e.keychar

Case cchar (“”) to cchar (“”)

e.Handled=false

case else

e.Handled=true

End select

            On how to edit:

Sendkeys.Send (“{home} + {end}”)

            I’ve learned also how to use error provider. It become Error Provider if you enter unacceptable keys, it will display an error message.