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In VB.NET using the "Like" operator to compare 2 strings gives me a different result now, as compared to in VB6.
Is this a bug?
e.g. ("aza" Like "*a*z*") = False !!!
yet, ("az" Like "*a*z*") = True (as I would expect)
Incidentally, I tried doing a search here for "Like" and the search engine didn't like that as a keyword.
Any ideas? Thanks, DaveBo
FWIW, I tried this with both Option Compare Binary and Text - no difference.
I'm convinced this is a BUG!
Not a big one maybe, but it did bite me yesterday when I copied one of my more simple and vanilla VB6 routines into a .NET program and it gave me new and wonderfully unexpected results (Never trust a computer!)
I always used to say "the best thing about computers is they can do the same task faithfully millions of times ... and 2+2 will always equal 4"
Now I long to take my PC out into a field and use my new peripheral sledge hammer on it.
Anyone see the movie "Office Space" and the copy machine "incident"?
DaveBo out
I've never used the like operator in either so I'm not 100% sure what the problem is but I know an easy solution. Instead of using Like use the RegEx objects.
^.a.z.$
that is the regular expression that will match *a*z* where * is any single character:
aaaza = true
baiza = true
bbaza = false
dadzdd = false
a breakdown of the expression:
^ - match beginning
. - match any single character
a - match only lowercase a
z - match only lowercase z
$ - match end
if you wanted to match both upper and lowercase you would do the following:
^.[aA].[zZ].$
Here's an excellent site on RegEx in general:
http://www.regular-expressions.info/
It is weird...
http://msdn.microsoft.com/library/de.../vaoprlike.asp
its the first * in the match pattern that is causing it. I don't have a reason why, it is possible to be a bug.