如何使用File.Open方法打开数据库

using System;
using System.Data.SqlClient;

class Program
{
    static void Main()
    {
        string connectionString = "Data Source=serverName;Initial Catalog=databaseName;User ID=userName;Password=password";
        
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            try
            {
                connection.Open();
                Console.WriteLine("数据库连接已打开");

                // 执行数据库操作

                connection.Close();
                Console.WriteLine("数据库连接已关闭");
            }
            catch (Exception ex)
            {
                Console.WriteLine("数据库连接错误: " + ex.Message);
            }
        }
    }
}