how to check caseing in string vb.net

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how to check caseing in string vb.net

i want to check wheater label text is in
upper case or
lowercase or
title case or
sentence case or
Toggle case

please help!!!

i got soln for lower and upper
i.e

VB

char.isUpper() 
char.isLower()

title case or
sentence case or
Toggle case

still dnt knw how to check

Posted 8-Aug-13 0:55am

Omkaara

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2 solutions

Solution 1

I don't think there's a one-size-fits-all solution for this. A simple way of determining whether your string IS in that case is to convert it TO that case and then check and see if the converted version is equal to the original. You can reference this article-- Letter Case Conversion Algorithms: Title Case, Toggle Case[^]--which gives some code for title and toggle cases. You could also use the old VB6 StrConv method, which is still available (ProperCase is the same as TitleCase):

VB

Dim s As String = "this is a test"
MessageBox.Show(StrConv(s, VbStrConv.ProperCase))

Note that proper/title case might not quite be what you might want. "A Tale of Two Cities" using the above title/proper case definitions gets you "A Tale Of Two Cities". I'd want that "Of" to be lowercase. A custom, character by character, solution is likely not that complex and will give you finer control of the results.

Posted 8-Aug-13 4:33am

woopsydoozy

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Omkaara · Accepted Answer · 2013-08-08T19:09:00

isUpper and isLower apply to single characters within a string. I think a better solution is to create a temporary string that is formatted the way you want it and return the comparison.

As an example (for ProperCase)

VB

If String.Format(yourString, vbStrConv.ProperCase) = yourString then
    'your code for proper case
End If