How to use ForgeTypeId to add family parameters to a family in Revit API 2023?

[jay.lei]

Hi! I am updating add-in codes for Revit 2021 to Revit 2023.  I found that the function that I used for adding a family parameter with a given name in Revit 2021 was removed in Revit 2023.

In the codes for Revit 2021, I used "AddParameter(String, BuiltInParameterGroup, ParameterType, Boolean)".  This function worked well, but was removed from Revit API 2023.  

In the codes for Revit 2023, it seems that I have to use "AddParameter(String, ForgeTypeId, ForgeTypeId, Boolean)".  What ForgeTypeIds should I use in this function for adding a family parameter?

Below is my codes for Revit API 2021.  thanks!

Document familyDoc = doc.EditFamily(loadedFamily);
FamilyManager familyMgr = familyDoc.FamilyManager;
using (Transaction tx1 = new Transaction(familyDoc))
{
    try
    {
        tx1.Start("AddCedWorksetToFamily");

        FamilyParameter CedWorksetParameter = familyMgr.AddParameter("CedWorkset", BuiltInParameterGroup.PG_DATA, ParameterType.Text, true);  //An instance parameter
        FamilyParameter CedFamilyTypeParameter = familyMgr.AddParameter("CedFamilyType", BuiltInParameterGroup.PG_DATA, ParameterType.Text, false);  //Not an instance parameter

        FamilyTypeSet familyTypes = familyMgr.Types;
        FamilyTypeSetIterator familyTypesItor = familyTypes.ForwardIterator();
        familyTypesItor.Reset();
        while (familyTypesItor.MoveNext())
        {
            FamilyType familyType = familyTypesItor.Current as FamilyType;
            familyMgr.CurrentType = familyType;
            familyMgr.Set(CedWorksetParameter, "Refrigeration");
            familyMgr.Set(CedFamilyTypeParameter, "Refrigeration");
        }

        tx1.Commit();
    }
    catch (Exception e)
    {
        if (tx1 != null) tx1.RollBack();
        TaskDialog.Show("Loading family", e.Message);
    }
}

[RPTHOMAS108 · Accepted solution]

You can find out which subset of ForgeTypeId objects to use in the method overload i.e.

public FamilyParameter AddParameter(
	string parameterName,
	ForgeTypeId groupTypeId,
	ForgeTypeId specTypeId,
	bool isInstance
)

So

GroupTypeId.Data

SpecTypeId.String.Text

Would be equivalent to what you had previously I believe.

[jay.lei]

Thanks!  RPTHOMAS108.  I used the "GroupTypeId.Data" and "SpecTypeId.String.Text".  It worked!