Registering DbProviderFactories <system.data> <DbProviderFactories> <add name="SqlClient Data Provider" invariant="System.Data.SqlClient" description=".Net Framework Data Provider for SqlServer" type="System.Data.SqlClient.SqlClientFactory, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </DbProviderFactories> </system.data> 相关文章： 2021-07-19 2021-09-09 2022-01-28 2021-06-09 2021-11-29 2022-02-25 2021-06-19