.NET Standard 2.0 连接Access数据库

Question

I'm trying to copy some records from a MS Sql Database to a new MS Access file. Unfortunately, my application is in .NET Standard 2.0 (as opposed to .NET Core or Framework, which would be simple to implement OleDb connection.) Also, I need to be able to build to 32-bit or 64-bit, so ADOX is not an option.

Does anyone know how I can open a connection to access through .NET Standard 2.0? Thanks!

Answer 1

Your timing couldn't have been better. Just days ago, as of writing this, version 4.6.0 of the System.Data.OleDb package came out of preview.

It targets two TFMs. The effect is different depending on which framework your assembly targets and thus which System.Data.OleDb TFM is restored for it.

• net461 - If you target .NET Framework 4.6.1+, it will restore an assembly that has has type forwarders to the types in the System.Data.OleDb namespace in the .NET Framework's System.Data asssembly.

• netstandard2.0 - If you target .NET Standard 2.0+, it will restore an assembly that contains the actual implementation of the OLEDB provider.

Although .NET Framework 4.6.1 supports .NET Standard 2.0, the net461 TFM is more specific so it'll copy the assembly that contains the type forwarders and you'll get the Framework's implementation.