topic error when duplicate family symbol ! in Revit API Forum

error when duplicate family symbol !

hanogkufu — Fri, 17 May 2024 21:10:32 GMT

Please help me! oput of this mistake??

using (Transaction pf = new Transaction(doc))
{
pf.Start("Place Instance");

foreach (PolyLine pLine in pLines)
{
XYZ firstP = pLine.GetOutline().MaximumPoint;

XYZ lastP = pLine.GetOutline().MinimumPoint;

XYZ midP = new XYZ((firstP.X+ lastP.X)/2 , (firstP.Y+ lastP.Y)/2, (firstP.Z + lastP.Z)/2);

IList<XYZ> PLineXYZ = pLine.GetCoordinates();

double l1 = Math.Round(UnitUtils.ConvertFromInternalUnits(PLineXYZ[0].DistanceTo(PLineXYZ[1]), UnitTypeId.Millimeters),0);

double l2 = Math.Round(UnitUtils.ConvertFromInternalUnits(PLineXYZ[1].DistanceTo(PLineXYZ[2]), UnitTypeId.Millimeters), 0);

double Length = l1 > l2 ? l1 : l2;

double Width = l1 < l2 ? l1 : l2;

string symName = Length.ToString() + "x" + Width.ToString() + "x500mm";

FamilySymbol sym = (syms.Where(s => s.Name == symName).FirstOrDefault()) ?? syms[0].Duplicate(symName) as FamilySymbol;

if (!sym.IsActive) sym.Activate();

FamilyInstance instance = doc.Create.NewFamilyInstance(midP, sym, level, StructuralType.Footing);
}
pf.Commit();
}
return Result.Succeeded;

Re: error when duplicate family symbol !

Mohamed_Arshad — Sat, 18 May 2024 00:18:33 GMT

Hi @hanogkufu

You are trying to duplicate with existing family symbol name. so the error is popping up. The name which you’re using for duplicate must be unique and no family symbol should use that name

Hope this will helps 🙂

Re: error when duplicate family symbol !

hanogkufu — Sat, 18 May 2024 03:47:52 GMT

Thank for your answer! But i do the condition above, if the "name" existing it must be assign to the sym before and didn't create new family symbol

Re: error when duplicate family symbol !

Moustafa_K — Sat, 18 May 2024 11:01:32 GMT

I think you missed filling back the syms collection with the new created symbol

you need to amend your code to something like this

FamilySymbol sym = (syms.Where(s => s.Name == symName).FirstOrDefault()); if (sym == null) { sym = syms[0].Duplicate(symName) as FamilySymbol; syms.Add(sym); }

Re: error when duplicate family symbol !

hanogkufu — Sun, 19 May 2024 00:10:44 GMT

@Moustafa_K yes it is ! thank you so much!