visual studio 2010 - vb.net how to check case of label.text i.e lower case, upper case -

how check caseing in label.text vb.net

i want check wheather label text in

upper case or lowercase or title case or sentence case or toggle case

got solution lower , upper

 if  char.islower()=true   'my code   endif   if  char.isupper() =true   'my code   endif

title case or

sentence case or

toggle case

still dnt knw how check

isupper , islower apply single characters within string. think better solution create temporary string formatted way want , return comparison.

as example (for propercase)

if string.format(yourstring, vbstrconv.propercase) = yourstring     'your code proper case end if

with this, should able most of comparisons going. toggle case, going have write algorithm string conversion you. see http://www.codeproject.com/tips/162540/letter-case-conversion-algorithms-title-case-toggl useful algorithm.

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