Filter selection of elements by family

[ricobano]

Hi guys i need to filter the selected elements by family.  We have a timber beam family and i need to modify only selected elements that are part of the timber family.

Any ideas?

[ollikat]

First solution that came to my mind:

Go trough all you elements in selection and...

1. First of all accept only those which can be casted to FamilyInstance(s).

2. Get the family symbol with FamilyInstance::Symbol and furthermore family with FamilySymbol::Family

3. If family element ID is same than timber family's ID, you got your element 😉

[ricobano]

Thanks Any chance of some code.  Im all new to autodesk

[ollikat]

This is just quick sample I wrote (C++ CLI)...not even tested that it compiles. If you are using C#, you have to figure out your self how to convert syntax 😉

List<Element^> timberElems;

  for each (Element ^elem in ActiveUIDocument->Selection->Elements)
  {
    try
    {
      FamilyInstance ^fInst = safe_cast<>(elem);
      Family ^selFam = fInst->Symbol->Family;

      if (selFam->Id->IntegerValue == timberFam->Id->IntegerValue)
        timberElems.Add(elem);
    }
    catch (InvalidCastException^)
    {
      ;
    }