sqlconnection.connectionstring="Persist Security Info=False;Integrated Security=SSPI;database=northwind;server=mySQLServer"oledbconnection.connectionstring="Provider=SQLOLEDB;Data Source=localhost;Initial Catalog=Northwind;Integrated Security=SSPI"上面是通过windows身份验证来登陆的我想问的是sqlserver中想通过sa帐户来登陆的话如何写连接字符串?