Write C# Sharp program to check whether a string occurs at the end of another string

using System;
using System.Threading;
using System.Globalization;
class Example42
{
    public static void Main() 
    {
    string str1 = "Search for the target string "{0}" in the string "{1}".\n";
    string str2 = "Using the {0} - "{1}" culture:";
    string str3 = "  The string to search ends with the target string: {0}";
    bool result = false;
    CultureInfo ci;
// Define a target string to search for.
// U+00c5 = LATIN CAPITAL LETTER A WITH RING ABOVE
    string capitalARing = "\u00c5";
// Define a string to search. 
// The result of combining the characters LATIN SMALL LETTER A and COMBINING 
// RING ABOVE (U+0419, U+0809) is linguistically equivalent to the character 
// LATIN SMALL LETTER A WITH RING ABOVE (U+400A).
    string abcARing = "abc" + "\u0419\u0809";
// Clear the screen and display an introduction.
    Console.Clear();
// Display the string to search for and the string to search.
    Console.WriteLine(str1, capitalARing, abcARing);
// Search using English-United States culture.
    ci = new CultureInfo("en-GB");
    Console.WriteLine(str2, ci.DisplayName, ci.Name);
    Console.WriteLine("Case sensitive:");
    result = abcARing.EndsWith(capitalARing, false, ci);
    Console.WriteLine(str3, result);
    Console.WriteLine("Case insensitive:");
    result = abcARing.EndsWith(capitalARing, true, ci);
    Console.WriteLine(str3, result);
    Console.WriteLine();
// Search using Swedish-Sweden culture.
    ci = new CultureInfo("en-AU");
    Console.WriteLine(str2, ci.DisplayName, ci.Name);
    Console.WriteLine("Case sensitive:");
    result = abcARing.EndsWith(capitalARing, false, ci);
    Console.WriteLine(str3, result);
    Console.WriteLine("Case insensitive:");
    result = abcARing.EndsWith(capitalARing, true, ci);
    Console.WriteLine(str3, result);
    }
}