Setting Yes/No parameters value through API

[Anonymous]

Hello! Im trying to import values from an Excel file into my Revit Project. This is the way I am setting the parameters right now but it doesnt do anything to the Yes/No box.

   Parameter p = e.get_Parameter(new Guid("1c8055b5-7eb4-4aba-9da7-91f0255a84d5"));
                    using (Transaction t = new Transaction(doc, "parameter"))
                    {
                        t.Start("param");
                        p.Set(0);
                        t.Commit();
                    }

Shouldnt the 0 unselect the Yes/No box? Or do I have this mixed up with something else. 

Let me know if you need any clarification.

[stever66]

Is your shared parameter set for "User modifiable" in the shared parameters file?

And  what is "e"?  An element in the model, or a family type?  Since shared parameters are set for each family type, e should contain a family type, not a family instance.  But I'm assuming you have this part right if its working for shared parameters that are a text type.

I don't see anything wrong with the "p.Set(0);" or "p.Set(1);".   That is working for me for yes/no instance parameters.  

[Anonymous]

Hello! Thanks for the reply. I ended up figuring it out, I just rewrote the whole method that part of the code was in and it ended up working. Thanks again for your help!

[stever66]

I had a heck of a time getting a sample of that code to work too.  The yes/no parameter wouldn't change.  So I tried with a couple of different text parameters.

Still no change.  I kept scratching my head on why something so simple wouldn't work.

Finally realized I had left out one line of code:   t.Commit():

Without that line, nothing in the model changes 🙂

[Anonymous]

Hahahah I did the exact same thing, took me an hour to figure that one out the hard way.

[gdavis479JP]

How about you post your fixed code please.