使用带有SQL命令对象和C#2.0的"IN"运算符

using System;
using System.Data;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = "Data Source=myServerAddress;Initial Catalog=myDataBase;Integrated Security=True";

        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();

            string sql = "SELECT * FROM myTable WHERE myColumn IN (@values)";

            using (SqlCommand command = new SqlCommand(sql, connection))
            {
                string values = "1,2,3";
                command.Parameters.AddWithValue("@values", values);

                using (SqlDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        // Process the result set
                    }
                }
            }
        }
    }
}