using System;

using System.Threading;

​

class Program

{

    // Static field marked with ThreadStaticAttribute

    [ThreadStatic]

    private static string threadSpecificData;

​

    static void Main()

    {

        // Create two threads to demonstrate thread-specific data

        Thread thread1 = new Thread(() =>

        {

            PerformThreadSpecificOperation("Thread 1", "Data from Thread 1");

        });

​

        Thread thread2 = new Thread(() =>

        {

            PerformThreadSpecificOperation("Thread 2", "Data from Thread 2");

        });

​

        // Start the threads

        thread1.Start();

        thread2.Start();

​

        // Wait for the threads to complete

        thread1.Join();

        thread2.Join();

​

        Console.WriteLine("All threads completed.");

    }

​

    static void PerformThreadSpecificOperation(string threadName, string value)

    {

        // Set thread-specific data

        threadSpecificData = value;

​

        // Retrieve and print the thread-specific data

        Console.WriteLine($"{threadName}: Retrieved data - {threadSpecificData}");

    }

}