What are the ideas to unite two slab elements in C# .NET?
So just to bring this question to a close for anyone else years later still looking for a solution to Unite Solids.
In CONNECT U16.2 (and earlier but not sure since when) you can use the Bentley.DgnPlatformNET.Modify class to run Boolean operations on Solid Elements.
Modify.BooleanIntersect, Modify.BooleanSubtract, BooleanUnion, BooleanCut, etc.
It is located in the Bentley.DgnDisplayNET assembly, as is the SolidUtil Class.
Regards, Francois Grobler
Answer Verified By: Robert Hook
FWIW. In addition to the correct findings/solution groblerf provided above hopefully some additional (reference) information may help others in the future too.
HTH,
Bob