Check textbox input for invalid entries

I have 2 textboxs that make a filename
txtName and txtAddress
I know there are characters or symbols that are not allowed in a filename
Example FileName:
John Doe 1124 Address.st
How can determine the wrong entries as they are typed and popup a message box
Call MsgBox(" These symbols not allowed: ????
isnoend2001Asked:
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Martin LissOlder than dirtCommented:
Would you rather want to prevent them from being entered in the first place?
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Martin LissOlder than dirtCommented:
Try this.
Private Sub Text1_KeyPress(KeyAscii As Integer)
Select Case KeyAscii
    ' These are the characters "<>?[]:|*!" which aren't allowed
    Case 33, 42, 124, 58, 93, 91, 63, 62, 60
        Beep
        KeyAscii = 0
End Select
End Sub

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isnoend2001Author Commented:
Thanks Marty, just what i needed
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Martin LissOlder than dirtCommented:
Glad I could help.
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