Use the IndexOfAny() and LastIndexOfAny() methods to search for character arrays in a string : String « String « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. String
3. String

using System;

class MainClass
{

  public static void Main()
  {
    string[] myStrings = {"To", "be", "or", "not", "to", "be"};
    string myString = String.Join(".", myStrings);   
    
    char[] myChars = {'b', 'e'};
    int index = myString.IndexOfAny(myChars);
    Console.WriteLine("'b' and 'e' occur at index " + index + " of myString");
    index = myString.LastIndexOfAny(myChars);
    Console.WriteLine("'b' and 'e' last occur at index " + index + " of myString");

  }

}

'b' and 'e' occur at index 3 of myString
'b' and 'e' last occur at index 17 of myString