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IsStringLower - Determine whether a string contains only lowercase chars
[ All Languages » VB »  String]

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Click here to copy the following block
Private Declare Function IsCharLower Lib "user32" Alias "IsCharLowerA" (ByVal _
  cChar As Byte) As Boolean

' Check is the specified string is composed only by lower case characters (no
' digits and no special chars)
' Example:
'  MsgBox "Is lower case? " & IsStringLower("hello")
'  MsgBox "Is lower case? " & IsStringLower("heLlo")
Public Function IsStringLower(ByVal sText As String) As Boolean
  Dim i As Integer
  
  IsStringLower = True
  
  ' for each char in the string
  For i = 1 To Len(sText)
    ' if not lower case, set False as return value and exit the for loop
    If IsCharLower(Asc(Mid$(sText, i, 1))) = False Then
      IsStringLower = False
      Exit For
    End If
  Next i

End Function


Submitted By : Nayan Patel  (Member Since : 5/26/2004 12:23:06 PM)

Job Description : He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting.
View all (893) submissions by this author  (Birth Date : 7/14/1981 )


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