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\         


        

Answer 1

Since Array.IndexOf is generic, it makes sense to make a generic extension function:

public static int IndexOf(this T[] source, T value)
{
  return IndexOf(source, value, StringComparison.InvariantCultureIgnoreCase);
}

public static int IndexOf(this T[] source, T value, StringComparison stringComparison)
{
  if (typeof(T) == typeof(string))
    return Array.FindIndex(source, m => m.ToString().Equals(value.ToString(), stringComparison));
  else
    return Array.IndexOf(source, value);
}