Get Id of Parameter

Revit
1

How do I get the Id of a parameter, say Comments?
I want to filter all elements having a specific parameter value.

image
image1179×425 52 KB 

commentPara = BuiltInParameter.ALL_MODEL_INSTANCE_COMMENTS
filterRule = ParameterFilterRuleFactory.CreateEqualsRule(commentPara.Id, "Hello", True)
pFilter = ElementParameterFilter(filterRule)

FilteredElementCollector(doc).WherePasses(pFilter).ToElements()

OUT = commentPara.Id
2

@theshysnail ,

you are looking for this node?

grafik
grafik728×314 12.8 KB

1 Like
3

Yeah, is it possible to do it with Revit API inside the Python Script?

4

here you are:

image
image809×279 39.4 KB

5

BuiltInParameter is Enum type , please input parameter of element,
CreateEqualsRule request input to parameter of element not BuiltInParameter

Sample like this :

pra = element.get_Parameter(BuiltInParameter.ALL_MODEL_INSTANCE_COMMENTS)
praid = pra.Id
filterRule = ParameterFilterRuleFactory.CreateEqualsRule(praid , "Hello", True)
3 Likes
6

@chuongmep ,

yeah that works


element = UnwrapElement(IN[0])

pra = element.get_Parameter(BuiltInParameter.ALL_MODEL_INSTANCE_COMMENTS)
praid = pra.Id
filterRule = ParameterFilterRuleFactory.CreateEqualsRule(praid , "Hello", True)

OUT = praid
1 Like
7

Thanks. So you need an element to act as a placeholder to get the parameter? Then as in the image below, I can get all elements, irrespective of category, which follows the filter.

image
image904×661 42.9 KB 

element = UnwrapElement(IN[0])
para = element.get_Parameter(BuiltInParameter.ALL_MODEL_INSTANCE_COMMENTS)

filterRule = ParameterFilterRuleFactory.CreateEqualsRule(para.Id, "Hello", True)
pFilter = ElementParameterFilter(filterRule)

elem = FilteredElementCollector(doc).WherePasses(pFilter).ToElements()

OUT = elem