using System;

using System.Threading;

using System.Threading.Tasks;

public class Program

{

    static async Task Main()

    {

        CancellationTokenSource cts = new CancellationTokenSource();

​

        // Pass the token to the task

        Task longRunningTask = LongRunningOperationAsync(cts.Token);

​

        // Simulate user canceling the operation after 2 seconds

        await Task.Delay(2000);

        cts.Cancel();

​

        try

        {

            await longRunningTask;

        }

        catch (OperationCanceledException)

        {

            Console.WriteLine("Operation was canceled.");

        }

        await Task.Delay(10000);

    }

​

    static async Task LongRunningOperationAsync(CancellationToken token)

    {

        for (int i = 0; i < 10; i++)

        {

            // Check if cancellation is requested

            token.ThrowIfCancellationRequested();

​

            Console.WriteLine($"Working... {i + 1}/10");

            await Task.Delay(1000); // Simulate work

        }

​

        Console.WriteLine("Operation completed successfully.");

    }

}