Well, @Ben_Osborne posted solution on the other thread is the same approach as mine.
here is the python code is you ever want to reference it:
import clr
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
# Import DocumentManager and TransactionManager
clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
# Import RevitAPI
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *
# Import ToDSType(bool) extension method
clr.AddReference("RevitNodes")
import Revit
clr.ImportExtensions(Revit.Elements)
# Import ToProtoType, ToRevitType geometry conversion extension methods
clr.ImportExtensions(Revit.GeometryConversion)
# Import DSCore nodes in Dynamo
clr.AddReference('DSCoreNodes')
import DSCore
from DSCore import *
# Import python library
import sys
pyt_path = r'C:\Program Files (x86)\IronPython 2.7\Lib'
sys.path.append(pyt_path)
import os
import shutil
import math
# Import math library
from math import *
#Import Data and Time
from datetime import datetime
now = datetime.now()
#Import System Library
import System
from System.Collections.Generic import *
from System.IO import Directory, Path
doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
app = uiapp.Application
def ToList(x):
if isinstance(x,list): return UnwrapElement(x)
else: return [UnwrapElement(x)]
#Preparing input from dynamo to revit
names = ToList(IN[0])
cats = ToList(IN[1])
catids = List[ElementId]()
catids.Clear()
for cc in cats:
catids.Add(cc.Id)
Parafilele = []
#get parameter id via name
iterator = doc.ParameterBindings.ForwardIterator()
while iterator.MoveNext():
if iterator.Key.Name == "123":
pvp = ParameterValueProvider(iterator.Key.Id)
break
#def subsubset of element filters
ssfilters = List[ElementFilter]()
ssfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringBeginsWith(),"test1",False)))
ssfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringEndsWith(),"test2",False)))
ssfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringLessOrEqual(),"test3",False)))
ssfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringGreaterOrEqual(),"test4",False)))
#define subset of element filters
sfilters = List[ElementFilter]()
sfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringEquals(),"hello1",False)))
sfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringContains(),"hello2",False)))
sfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringContains(),"hello3",False)))
sfilters.Add(ElementParameterFilter(FilterStringRule(pvp,FilterStringContains(),"hello4",False)))
sfilters.Add(LogicalOrFilter(ssfilters))
#define final set of element filters
fRule = LogicalAndFilter(sfilters)
#Do some action in a Transaction
TransactionManager.Instance.EnsureInTransaction(doc)
for name,cat in zip(names,cats):
paraele = ParameterFilterElement.Create(doc,name,catids)
paraele.SetElementFilter(fRule)
Parafilele.append(paraele)
TransactionManager.Instance.TransactionTaskDone()
#Final output
OUT = Parafilele
And i believe there are lots of custom package out there that can and will extract shared parameter id.