Getting the index of a particular item in array

Question

I want to retrieve the index of an array but I know only a part of the actual value in the array.

For example, I am storing an author name in the array dynamically sa

Answer 1

FindIndex Extension

static class ArrayExtensions
{
    public static int FindIndex(this T[] array, Predicate match)
    {
        return Array.FindIndex(array, match);
    }
}

Usage

int[] array = { 9,8,7,6,5 };

var index = array.FindIndex(i => i == 7);

Console.WriteLine(index); // Prints "2"

Here's a fiddle with it.

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Bonus: IndexOf Extension

I wrote this first not reading the question properly...

static class ArrayExtensions
{
    public static int IndexOf(this T[] array, T value)
    {
        return Array.IndexOf(array, value);
    }   
}

Usage

int[] array = { 9,8,7,6,5 };

var index = array.IndexOf(7);

Console.WriteLine(index); // Prints "2"

Here's a fiddle with it.