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

Question

I have a string: ``` string str = "hello"; ``` And an array: ``` string[] myarr = new string[] {"good", "Hello", "this", "new"}; ``` I need to get the index of ("Hello") from the array when comparing with my string ("hello") (without using a loop). I have tried: ``` int index = Array.IndexOf(myarr, str); ``` This returns `-1`, because of the capital "H", but I want a result of `1`. I have even tried with `StringComparer.OrdinalIgnoreCase` but no avail.

Accepted Answer

Since you are looking for index. Try this way.

```
Array.FindIndex(myarr, t => t.IndexOf(str, StringComparison.InvariantCultureIgnoreCase) >=0);
```

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

Solution

Problem