如何使用CancellationToken取消ExecuteReaderAsync

using System;
using System.Data.SqlClient;
using System.Threading;
using System.Threading.Tasks;

public class Program
{
    public static async Task Main()
    {
        // 创建CancellationTokenSource对象
        using (CancellationTokenSource cts = new CancellationTokenSource())
        {
            // 获取CancellationToken
            CancellationToken token = cts.Token;

            // 创建SqlConnection对象
            using (SqlConnection connection = new SqlConnection("connectionString"))
            {
                await connection.OpenAsync();

                // 创建SqlCommand对象
                using (SqlCommand command = new SqlCommand("SELECT * FROM TableName", connection))
                {
                    try
                    {
                        // 将CancellationToken传入ExecuteReaderAsync方法
                        using (SqlDataReader reader = await command.ExecuteReaderAsync(token))
                        {
                            while (await reader.ReadAsync())
                            {
                                // 执行读取操作
                            }
                        }
                    }
                    catch (OperationCanceledException)
                    {
                        // 在取消操作时捕获OperationCanceledException异常
                        Console.WriteLine("操作已取消");
                    }
                }
            }
        }
    }
}