连接字符串导致创建表时用户登录失败，但创建数据库时登录失败

Question

我已经能够使用此连接字符串创建一个新数据库：

 SqlConnection myConn = new SqlConnection("Server=.\\SQLEXPRESS;Integrated security=True;User Instance=True");

但是，当我使用此连接字符串创建表时：

 SqlConnection connection = new SqlConnection("Server=.\\SQLEXPRESS;Database='FormsDB';Integrated security=True;User Instance=True");

它为用户提供了登录失败

我到目前为止尝试过：

SqlConnection connection = new SqlConnection(@"Server=.\SQLEXPRESS;Initial Catalog='FormsDB';Integrated security=True;User Instance=True;Trusted_Connection=True;");

我收到同样的错误消息：

 System.Data.SqlClient.SqlException (0x80131904): Cannot open database "FormsDB" requested by the login. The login failed. Login failed for user 'LC-SURF\Tums'. at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) at .....

任何建议都将不胜感激。

谢谢。

Answer 1

此格式的连接字符串，您必须使用sa帐户登录SQL Server。

string ConnectionString = @"Data Source = .\SQLEXPRESS;Initial Catalog = FormsDB;Integrated Security = True; User Id = sa; Password = sql";