DbConnection连接失败，SqlConnection连接成功

[51Crack]

DbProviderFactory dbFactory = DbProviderFactories.GetFactory(“System.Data.SqlClient”)
DbConnection dbConn = dbFactory.CreateConnection();
dbConn.ConnectionString = "Data Source=XXX\ooo;Initial Catalog=MyDb;User ID=jj;Password=yy;";

Open时出错：System.Data.SqlClient.SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)

相同的连接字符串，使用SqlConnection连接就成功，哪位知道是什么原因？

[51Crack]

SQL Server 2008，在另一台电脑用SQL2008也能正常连接

[bdmh]

DbConnection 是连接access的 SqlConnection是连接sqlserver的

[51Crack]

引用 2 楼 bdmh 的回复:

DbConnection 是连接access的 SqlConnection是连接sqlserver的

晕，你这版主怎么混上来的

[u012997273]

引用 3 楼 51Crack 的回复:

[quote=引用 2 楼 bdmh 的回复:] DbConnection 是连接access的 SqlConnection是连接sqlserver的

晕，你这版主怎么混上来的[/quote] 哈哈，你这回复好伤人呀