如何在C#中检查是否成功连接到SQL Server数据库？

   Console.WriteLine("成功连接到SQL Server数据库");

   Console.WriteLine("连接到SQL Server数据库失败");

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

namespace SqlConnectionExample
{
    class Program
    {
        static void Main(string[] args)
        {
            string connectionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=Username;Password=Password";
            SqlConnection connection = new SqlConnection(connectionString);

            try
            {
                connection.Open();

                if (connection.State == ConnectionState.Open)
                {
                    Console.WriteLine("成功连接到SQL Server数据库");
                }
                else
                {
                    Console.WriteLine("连接到SQL Server数据库失败");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("连接到SQL Server数据库失败：" + ex.Message);
            }
            finally
            {
                connection.Close();
            }

            Console.ReadLine();
        }
    }
}