可以覆盖sql字符串中的查询吗？C#

using System;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = "Your_Connection_String";
        string query = "SELECT * FROM YourTable";

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

            using (SqlCommand command = new SqlCommand(query, connection))
            {
                using (SqlDataReader reader = command.ExecuteReader())
                {
                    while (reader.Read())
                    {
                        // 处理查询结果
                        // 例如：Console.WriteLine(reader.GetString(0));
                    }
                }
            }
        }
    }
}