use the Compare() method to compare strings

   
   
using System;

class MainClass {

    public static void Main() {

        int result;
        result = String.Compare("bbc", "abc");
        Console.WriteLine("String.Compare("bbc", "abc") = " + result);
        result = String.Compare("abc", "bbc");
        Console.WriteLine("String.Compare("abc", "bbc") = " + result);
        result = String.Compare("bbc", "bbc");
        Console.WriteLine("String.Compare("bbc", "bbc") = " + result);
        result = String.Compare("bbc", "BBC", true);
        Console.WriteLine("String.Compare("bbc", "BBC", true) = " + result);
        result = String.Compare("bbc", "BBC", false);
        Console.WriteLine("String.Compare("bbc", "BBC", false) = " + result);
        result = String.Compare("Hello World", 6, "Goodbye World", 8, 5);
        Console.WriteLine("String.Compare("Hello World", 6, " + ""Goodbye World", 8, 5) = " + result);
    
    }
}