Port to Net Standard 2

[w9n]

Hi,

I think these extensions are still pretty useful and i would like to use them in net core apps.

The Following references are troubling:
Gridsum.DataflowEx.Utils ->
Generic Types from mscorlib
System.Data.DataColumnCollection (used by Databases)
System.Diagnostics.Stackframe with Common.Logging.LogManager

Gridsum.DataflowEx.Databases ->
System.Data.SqlClient

Gridsum.DataflowEx.AutoCompletion -> System.Timers (should be easy)

(C5 -> recently updated for net standard but nuget out of date)

@karldodd any updates from you #3 ?

[karldodd]

@w9n Thanks for your comments and the list for troubling references.

Yes, I do have the plan to migrate to .Net Core and is somehow waiting for .net standard 2.0, which I guess will make the migration a lot easier. I will also look at whether some old stuff should be replaced by modern libs.

Are u OK with this library targeting net standard 2, or u need it to be 1.x?

[w9n]

@karldodd I was kind of confused of the net standard 2 process, i need a .net core/4.6 compatible version but experienced that this complicated atm. I hacked together a branch with net standard 1.6, with minor api changes and also had to delete all Database related code to make it work for my purposes.

For now we should wait as standard 2 seems to be at 96% progress :)

[karldodd]

@w9n This is almost done now with .Net Core preview 2 ! Please try out the preview release:

https://www.nuget.org/packages/Gridsum.DataflowEx/2.0.0-alpha

Related pr is #13

[Lakritzator]

When can we expect the merge of #13 and release availability of the package for .NET Core?
.NET Core 2.0 is available: https://blogs.msdn.microsoft.com/dotnet/2017/08/14/announcing-net-core-2-0/

[w9n]

sorry for the late response, im currently not working with .net and cant properly check out the port. Feel free to close the issue if you think its ready.

[karldodd]

@Lakritzator I've released a new version (2.0.0-beta) of the package today which now uses .net core 2 rtm and corresponding libraries/references are also upgraded. Please try it out if you need.

I think #13 is almost done and will be merged soon if 2.0.0-beta works smoothly.