<connectionStrings> - <add name="default" connectionString="Data Source=.; Integrated Security=True; Initial Catalog=OSharp.Default; Pooling=True; MultipleActiveResultSets=True;" providerName="System.Data.SqlClient" /> - - <!--<add name="mysql-default" connectionString="Server=localhost; Database=OSharp.Default; Uid=gmf; Pwd=31529019; charset=utf8;" providerName="MySql.Data.MySqlClient" />--> - + <!--mssql--> + <!--<add name="default" providerName="System.Data.SqlClient" connectionString="Data Source=.; Integrated Security=True; Initial Catalog=OSharp.Default; Pooling=True; MultipleActiveResultSets=True;" />--> + <!--localdb--> + <add name="default" providerName="System.Data.SqlClient" connectionString="Data Source=(localdb)MSSQLLocalDB;Integrated Security=True;Initial Catalog=OSharp.Default;AttachDBFilename=|DataDirectory|OSharp.Default.mdf;" /> + <!--mysql--> + <!--<add name="mysql-default" providerName="MySql.Data.MySqlClient" connectionString="Server=localhost; Database=OSharp.Default; Uid=gmf; Pwd=31529019; charset=utf8;" />--> </connectionStrings>