【問題】
連接報錯：
An exception of type System.Data.SqlClient.SqlException was thrown.
Additional exception information: A network-related or instance-specific error occurred while establishing a connection to SQL Server.
The server was not found or was not accessible
【解決辦法】
1、打開sqlserver服務管理器，開啓TCP/IP連接
2、設置TCP/IP中屬性的"IP ALL"的端口爲1433
3、重啓SQL服務就可以用127.0.0.1登錄上了
