door host wall

[sonicer]

I have door instance(q) and then I want get a wall host.

Need get a width of this wall.

what is wrong?

Element wallhost = q.Host;
 double width = wallhost.get_Parameter(BuiltInParameter.WALL_ATTR_WIDTH_PARAM).AsDouble();

[jeremytammik]

Nothing. Looks perfectly fine to me.

[sonicer]

don't know where is problem

also

this work .....but don't know after wrote symbol. the visual studio 2015 offer me get_Parameter function.....in sharpdevelop doesn't...

 double sirka = q.Symbol.get_Parameter(BuiltInParameter.DOOR_WIDTH).AsDouble();

[FAIR59 · Accepted solution]

the Wall-instance doesn't have a BuiltInParameter.WALL_ATTR_WIDTH, but the WallType does.

                            Wall wallhost = q.Host as Wall;
                            WallType wallType = wallhost.WallType;
                            double width = wallType.get_Parameter(BuiltInParameter.WALL_ATTR_WIDTH_PARAM).AsDouble();

[sonicer]

thanks ...that work..

Btw....where can I find this information-  what is instance(familyinstance)  and what not ?

thx.

[FAIR59]

https://knowledge.autodesk.com/search-result/caas/CloudHelp/cloudhelp/2016/ENU/Revit-API/files/GUID-...