How to access Ceiling Type Parameters?

[Anonymous]

Hi,

I am trying to access Ceiling Type parameters (ie: Type Mark or any project parameters).

In the code below, "param" stays null for Ceiling if value = "Type Mark".

Note: I can't use built-in values as the user type the names of the required parameters.

Parameter param = null;

            Element e = currentSet.FirstElement();   // currentSet is a FilteredElementCollector that may contain Ceiling elements
            if (e is FamilyInstance)
            {
                FamilyInstance inst = (FamilyInstance)e;
                if (inst == null)
                {
                    return null;
                }

                // Get the parameter
                FamilySymbol symb = inst.Symbol;
                Family fam = symb.Family;

                param = inst.LookupParameter(value);
                if (param == null)
                {
                    param = symb.LookupParameter(value);
                }
            }
            else if (e is Wall)
            {
                Wall w = (e as Wall);
                param = w.WallType.LookupParameter(value);
            }
            else if (e is RoofBase)
            {
                RoofBase r = (e as RoofBase);
                param = r.RoofType.LookupParameter(value);
            }
            else if (e is Ceiling)
            {
                Ceiling c = (e as Ceiling);
                // There is no equivalent to WallType or RoofType and default Lookup doesn't work.
                param = c.LookupParameter(value);   // returns null
            }
            else
            {
                param = e.LookupParameter(value);
            }

Any help is much appreciated.

[jeremytammik · Accepted solution]

GetTypeId:

http://www.revitapidocs.com/2017/cc66ca8e-302e-f072-edca-d847bcf14c86.htm