Question

How to use string.CompareOrdinal() to compare two strings in C#

Answer 1

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            string s1 = "abc";
            string s2 = "abc";
            int n = string.CompareOrdinal(s1, s2); // 0 : s1 = s2 (97 - 97)
            Console.WriteLine(n);

            s1 = "abc";
            s2 = "Abc";
            n = string.CompareOrdinal(s1, s2); // 32 = s1 > s2 (97 - 65)
            Console.WriteLine(n);

            s1 = "Abc";
            s2 = "abc";
            n = string.CompareOrdinal(s1, s2); // -32 = s1 < s2 (65 - 97)
            Console.WriteLine(n);

            s1 = "a";
            s2 = "A";
            n = string.CompareOrdinal(s1, s2); // 32 : s1 > s2 (97 - 65)
            Console.WriteLine(n);

            s1 = "b";
            s2 = "a";
            n = string.CompareOrdinal(s1, s2); // 1 : s1 > s2 (98 - 97)
            Console.WriteLine(n);


            s1 = "a";
            s2 = "c";
            n = string.CompareOrdinal(s1, s2); // -1 : s1 > s2 (97 - 99)
            Console.WriteLine(n);

            s1 = "abc";
            s2 = "aBc";
            n = string.CompareOrdinal(s1, s2); // 32 = s1 > s2 ('b' - 'B' : 98 - 66)
            Console.WriteLine(n);
        }
    }
}


/*
run:
    
0
32
-32
32
1
-2
32

*/

 

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