```asp.net
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
SqlConnection mycon = new SqlConnection(@"Data Source=.\SQLEXPRESS;AttachDBFilename
=|DataDirectory|\Database1.mdf;integrated Security=True;User instance=True");
mycon.Open();
Console.WriteLine("打开数据库连接成功！");
Console.ReadKey();
}
}
}
```
可能会遇到的问题