how to compare string without case sensitive using c#?

Question

What is the best way to compare two string without case sensitive using c#? Am using the below codes.

string b = "b";
int c = string.Compare(a, b);

https://msdn.microsoft.com/en-us/library/zkcaxw5y%28v=vs.110%29.aspx — spender, May 10 '16 at 09:51

score 4 · Answer 1 · answered May 10 '16 at 09:50

4

By explicitly specifying it:

int c = string.Compare(a, b, StringComparison.InvariantCultureIgnoreCase)

answered May 10 '16 at 09:50

You should use OrdinalIgnoreCase or CurrentCultureIgnoreCase depending on your needs. You normally don't want to use the InvariantCultures for comparisons - see https://msdn.microsoft.com/en-us/library/ms973919 – Alsty May 10 '16 at 09:53
@Manfred Thanks I was thinking about String.Equals(stringA, stringB, StringComparison.CurrentCultureIgnoreCase) – parthi May 10 '16 at 09:53

score 2 · Answer 2 · edited May 10 '16 at 10:41

2

Try this code

int c = string.Compare(a, b,true);

edited May 10 '16 at 10:41

Mostafiz

answered May 10 '16 at 09:53

Akshey Bhat

the last argument should be `true` (ignoreCase) – Manfred Radlwimmer May 10 '16 at 09:55

score 1 · Answer 3 · answered May 10 '16 at 09:53

1

convert them to lower case then compare, There you go:

        string b = "b";
        string a = "";
        int c = string.Compare(a.ToLower(), b.ToLower());

answered May 10 '16 at 09:53

Obadah Hammoud

score -2 · Answer 4 · answered May 10 '16 at 09:52

-2

String.Equals(stringA, stringB, StringComparison.CurrentCultureIgnoreCase)

answered May 10 '16 at 09:52

parthi

4 Answers4