Works great! With this approach I can share this library with many web projects.
But nowadays, I'm moving my projects to asp.netcore.
So, I created a class library with netstandard 2.0 and I added the classes exported via "Stimulsoft Designer 2018.1.4".
The dependencies below is required in these classes, but the framework doesn't support.

System.Drawing;
System.Windows.Forms;
Would it be possible in future releases export a c# class supported in .netstandard 2.0?