PythonNet and .NET Class Interfaces

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The latest version of Dynamo PythonNet3 engine (version package 1.1.0) fixes the .NET interface/class inheritance bug, making syntax simpler.

Codes are now going to be

import clr
import System
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('RevitAPIUI')
import Autodesk.Revit.UI as RUI
from Autodesk.Revit.UI import *
from Autodesk.Revit.UI.Selection import *

clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
uidoc = uiapp.ActiveUIDocument


class Custom_SelectionElem(ISelectionFilter):
    __namespace__ = "Custom_SelectionElem"
    #
    def __init__(self, bic):
        super().__init__()
        self.bic = bic
        
    def AllowElement(self, e):
        if e.Category.Id == ElementId(self.bic):
            return True
        else:
            return False
    def AllowReference(self, ref, point):
        return True 

# usage       
for i in range(3):
    RUI.TaskDialog.Show("Select", f"Select a door {i+1}/3")
    ref = uidoc.Selection.PickObject(ObjectType.Element, Custom_SelectionElem(BuiltInCategory.OST_Doors))
    print(ref.ElementId)

and

import clr
import System
clr.AddReference('RevitAPI')
from Autodesk.Revit.DB import *

clr.AddReference('RevitAPIUI')
import Autodesk.Revit.UI as RUI
from Autodesk.Revit.UI import *
from Autodesk.Revit.UI.Selection import *

clr.AddReference("RevitServices")
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument
uiapp = DocumentManager.Instance.CurrentUIApplication
uidoc = uiapp.ActiveUIDocument

#         
class Custom_FamilyOption(IFamilyLoadOptions) :
    __namespace__ = "Custom_FamilyOption"

    def __init__(self):
        super().__init__() # necessary  if you override the __init__ method

    def OnFamilyFound(self, familyInUse, _overwriteParameterValues):
        overwriteParameterValues = True
        return (True, overwriteParameterValues)

    def OnSharedFamilyFound(self, sharedFamily, familyInUse, source, _overwriteParameterValues):
        overwriteParameterValues = True      
        return (True, overwriteParameterValues)

for path in IN[0] : 
    loadFamily(path)
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