Search sorted List for an element with specified comparer and returns the zero-based index of the element in CSharp

using System;//  w w  w.j a v a 2 s  .c  om
using System.Collections.Generic;

public class MyComparer : IComparer<string>
{
    public int Compare(string x, string y)
    {
        if (x == null || y == null)
        {
            return 0;
        }
        return x.CompareTo(y);
    }
}

public class Example
{
    public static void Main()
    {
        List<string> myData = new List<string>();
        myData.Add("B");
        myData.Add("C");
        myData.Add("D");

        MyComparer dc = new MyComparer();

        myData.Sort(dc);
        String insert = "java2s.com";
        int index = myData.BinarySearch(insert, dc);

        if (index < 0)
        {
            myData.Insert(~index, insert);
        }

        foreach (string s in myData)
        {
            Console.WriteLine(s);
        }
    }
}