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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Nov 9, 2001



Application Security Testing: An Integral Part of DevOps

Test if a Character in a String is a Letter

There is a simple way to test if a character in a string is a letter. Just by using the UCase() And LCase() functions.
    Public Function IsLetter(Char As String) 
As Boolean
    Dim sTemp As String
        sTemp = Left$(Char, 1)
        IsLetter = (StrComp(UCase(sTemp), LCase(sTemp), 
vbBinaryCompare) <> 0)
    End Function

Note: I use the StrComp function, to make it work independent of Option Compare.
Andreas Hillqvist
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