Topic: how to make typedvalue out of objectID?

[jmaeding]

I am making a set of functions that makes an arraylist from a resultbuffer, then later converts back to a resultbuffer.
I test it by converting the results of an entget.
One of those items is the -1 group, which is the entity name.
I can convert the ename to a string no problem for the first part of the prog, but when trying to make the typedvalue object and resbuff with:
outRB.Add(new TypedValue(-1, "-2069760"));

it crashes acad.  I can only guess an entity name cannot be added using a string.
I know the ename val is valid, its not an erased entity or something.
Anyone have ideas on how to do it correctly?
thanks

[jmaeding]

hmm, seems making an objectID out of the number like this works:

AcDb.ObjectId id = new ObjectId(Convert.ToInt32("-2056784"));
retTV = new TypedValue(-1, id);

I get a message saying to use the intPtr constructor of objectID, not sure how to do that but only tried a couple things like (intPtr)"-2056784"...

[jmaeding]

worked well.  I had to check for the -1 and 330 groups which are enames form an entget.
I might have to do something different though, as I would prefer to not rely on the typecode number when reconstructing the typecode. I make lists of enames all the time in lisp for things that create groups and so on...

[Jeff H]

Have you tried something like?

Code: [Select]

outRB.Add(new TypedValue((int)LispDataType.ObjectId, objId));