Inkey function in Visual Basic 6

I need to check a value to make sure that there are no spaces or special characters in it. Alpha numeric characters are valid. But not any other characters like space, *, %, etc.
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Better to put function to check character on Key Press Event

Private Sub text1_KeyPress(KeyAscii As Integer)
    Dim iNumbers As Integer
    Dim sMsg As String
    iNumbers = KeyAscii

    If ((iNumbers < 48 Or iNumbers > 57) And (iNumbers < 65 Or iNumbers > 90) and (iNumbers < 97 Or iNumbers > 122)) Then
        sMsg = MsgBox("Could Not")
        KeyAscii = 0
    End If
End Sub
Private Sub text1_KeyPress(KeyAscii As Integer)
Select case Keyascii
case 48 to 57
msgbox ("text is valid")
case else
msgbox("text not valid")
end select
end sub

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Don't forget about backspace:

    If ((iNumbers < 48 Or iNumbers > 57) And (iNumbers < 65 Or iNumbers > 90) And (iNumbers < 97 Or iNumbers > 122) And iNumbers <> 8 ) Then

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Actually, better to use a case like JackOfPH did:

Select Case KeyAscii
    Case 8, 48 To 57, 65 To 90, 97 To 122
    Case Else
        MsgBox ("Invalid")
End Select
Mike what the different
"better to use a case like JackOfPH did"
Much clearer and easier to read /maintain if valid keys are to be added or removed from validity check, that's all.
Sorry,Not differents.It depend what from personal choice
Didn't say it was different, just clearer.  Both will give the same result, but compare your if to the case I put and tell me which one is easier to read.
It just discussion.
Personaly I like If Statement more,but it again depent of personal choice.

Agreed.  I guess it does boil down to personal choice or style of programming that your used to.
The answer you accepted only accepts 0-9.  Is that what you wanted??
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Visual Basic Classic

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