Failiurehandling

[dante.van.wettum]

What i am trying to do is edit the mark value in bulk.

This works well, though i need to catch the "Duplicate mark" error so i dont get any duplicates.

What i try do do, is assign the parameter, and check if it is generating an error:

......<custom class FailureHandler : IFailuresPreprocessor> .....
<snip-it>

if (ErrorMessage == "Elements have duplicate \"Mark\" values.")
                    {
                        return FailureProcessingResult.ProceedWithRollBack;
                    }

so in my actual transaction:

Transaction tr = new Transaction(doc);

                //Overwrite failiure handling
                FailureHandlingOptions fHO = tr.GetFailureHandlingOptions();
                FailureHandler fH = new FailureHandler();
                fHO.SetFailuresPreprocessor(fH);
                fHO.SetClearAfterRollback(true);
                tr.SetFailureHandlingOptions(fHO);

                transGroup.Start("Do My Thing");
                foreach (Tuple<ElementId, string> tup in ids)
                {
                    using (tr)
                    {
                        var transStatus = tr.Start("sub-step");
                        try
                        {
                            Element el = doc.GetElement(tup.Item1);
                            Parameter p = el.get_Parameter(BuiltInParameter.ALL_MODEL_MARK);
                            p.Set(tup.Item2);
                        }
                        catch (Exception ex)
                        {
                            TaskDialog.Show("DEBUG", ex.Message);
                        }
                        tr.Commit();
                    }
                }
                transGroup.Assimilate();

now what i want to do, is check if this error occurs when trying to add the mark, if it happens, edit the mark (something like an int counter ++ toString) and try it again. Keep trying this untill it works.

With the above code, i think i am almost there, only i dont know the last part where i check and retry when doing the transaction.

any thoughts/ last push ?

[jeremytammik · Accepted solution]

Dear Dante,

Thank you for your query.

This is covered by the Revit Failure API:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#5.32

Several quite complex failure API issues have been discussed and solved quite recently here in the forum as well.

I hope this helps.

Best regards,

Jeremy