Determine List.IndexOf ignoring case [duplicate]

Question

Is there a way to get the index of a item within a List with case insensitive search?

List<string> sl = new List<string>() { "a","b","c"};
int result = sl.IndexOf("B"); // should be 1 instead of -1

Jaydip Jadhav · Accepted Answer · 2016-09-12 08:08:51Z

29

Try this : So there is no direct way to use IndexOf with String Comparison option for LIST, to achieve desire result you need to use Lambda expression.

int result = sl.FindIndex(x => x.Equals("B",StringComparison.OrdinalIgnoreCase));

edited Sep 12, 2016 at 8:08

answered Sep 12, 2016 at 8:02

Jaydip Jadhav

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Comments

Liam · Accepted Answer · 2016-09-12 08:14:45Z

-6

The IndexOf method for Strings in C# has a ComparisonType argument, which should work something like this:

sl.IndexOf("yourValue", StringComparison.CurrentCultureIgnoreCase)

or

sl.IndexOf("yourValue", StringComparison.OrdinalIgnoreCase)

Documentation for this can be found here and here

edited Sep 12, 2016 at 8:14

Liam

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answered Sep 12, 2016 at 7:57

Eskir

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3 Comments

STLDev Over a year ago

As @c0rd said in response to another answer for this thread, this isn't about a string, it's about a List<string>.

STLDev Over a year ago

For what it’s worth, I downvoted that answer too. I hope there are no hard feelings. Just trying to help.

Jose Ricardo Citerio Alcala Over a year ago

This answer was useful for me..I upvoted it.

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