如何在C＃中的单个连接字符串中访问两个数据库？

Question

我需要在VS 2010（c＃）中使用相同的Windows窗体访问两个不同的Sql数据库。

using System.Data.SqlClient;

//My Code For Connection of one Database named sms. 

SqlConnection con = new SqlConnection(@"Data 
Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\sms.mdf;Integrated 
Security=True;Connect Timeout=30;User Instance=True");

我还希望以相同的形式访问名称为sms2的数据库。

SqlConnection con = new SqlConnection(@"Data 
Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\sms2.mdf;Integrated 
Security=True;Connect Timeout=30;User Instance=True");

感谢您的帮助。

Answer 1

您使用两个单独的连接对象：

SqlConnection con1 = new SqlConnection(@"Data 
Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\sms.mdf;Integrated 
Security=True;Connect Timeout=30;User Instance=True");

SqlConnection con2 = new SqlConnection(@"Data 
Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\sms2.mdf;Integrated 
Security=True;Connect Timeout=30;User Instance=True");