Equivilent of VB InStr(Lcase())

[Guest]

Hi,

String.IndexOf is case sensitive so I need to covert to lower before testing
the string contains a given string. In VB this is:

Instr(Lcase(StringToTest, "StringToCheckFor"))

What is the C# equivilent? The closest I've comeup with is:

string lowerString = testString.ToLower();
lowerString.IndexOf("checkstring")

Thanks,

Mike

 

[Chris Dunaway]

Why not combine them?

testString.ToLower().IndexOf("checkstring");

 

[Guest]

Thanks Chris,

I tried to do that but had forgotten to add the () after ToLower.

I'll get the hang of this eventually!

Mike

 

[Jay B. Harlow [MVP - Outlook]]

Mike,
In addition to the other comments.

If you have .NET 2.0 (VS 2005), you can use the overloaded String.IndexOf
that accepts a StringComparison parameter:

http://msdn2.microsoft.com/en-us/library/ms224425(en-US,VS.80).aspx

Either StringComparison.CurrentCultureIgnoreCase or
StringComparison.InvaiantCultureIgnoreCase should give you what you are
after...

--
Hope this helps
Jay [MVP - Outlook]
..NET Application Architect, Enthusiast, & Evangelist
T.S. Bradley - http://www.tsbradley.net


| Hi,
|
| String.IndexOf is case sensitive so I need to covert to lower before
testing
| the string contains a given string. In VB this is:
|
| Instr(Lcase(StringToTest, "StringToCheckFor"))
|
| What is the C# equivilent? The closest I've comeup with is:
|
| string lowerString = testString.ToLower();
| lowerString.IndexOf("checkstring")
|
| Thanks,
|
| Mike

 

[Chris Dunaway]

I tried to do that but had forgotten to add the () after ToLower.

That gets me all the time coming from VB.Net where it is not required.
I wish the IDE were smart enough to insert them for me when I hit the
period key.