使用vs2015链接sql数据库失败
用vs2015创建了一个sql数据库文件,data.mdf。用data.mdf属性里的链接字符串
connstr =
"Data Source =(LocalDB)\\MSSQLLocalDB; AttachDbFilename = data.mdf; Integrated Security = True; Connect Timeout=30"
链接失败,提示没有写provider
于是把连接字符串改成
connstr =
"Provider=SQLOLEDB;Data Source =(LocalDB)\\MSSQLLocalDB; AttachDbFilename = data.mdf; Integrated Security = True; Connect Timeout=30"
运行到OleDbConnection.open()的时候出现错误,错误代码0x80040E21,求大神指点啊