c# - How to add a case-insensitive option to Array.IndexOf

Question

I have a string

string str="hello";

This is my array

string[] myarr = new string[] {"good","Hello", "this" , "new"};

I need to find the index of "hello" from the array (Without Using a Loop)

So i have used

int index = Array.IndexOf(myarr, str);

This returns -1 ,But i am expecting result as 1.

I have even tried with StringComparer.OrdinalIgnoreCase but no avail.

Hope someone can help. Thanks.

Answer 1

Beaware !! The Answer marked might have some problem , like

string array[] = {"hello", "hi", "bye" , "welcome" , "hell"}

if you use the same method as described in the answer to find the index of word "hell"

Int Indexofary = Array.FindIndex(array, t => t.IndexOf("hell", StringComparison.InvariantCultureIgnoreCase) >=0);

you will get result Indexofary = 0 instead of 4.

Instead of that use

Array.FindIndex(array, t => t.Equals("hell", StringComparison.InvariantCultureIgnoreCase));

to get proper result .

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