Using revitNet DLL, the railing creation fails, and ifailurespreprocessor shows that the sketch is empty

[1097461414]

When I use a plug-in and use iexternalcommand to implement the following code：

It can succeed！

using (Transaction transaction = new Transaction(RevitDoc))
 {
    transaction.Start("create rallings");
    CurveLoop curveloop = new CurveLoop(); 
    curveloop.Append(Line.CreateBound(new XYZ(),new XYZ(10,0,0));
    Autodesk.Revit.DB.Architecture.Railing.Create(this.RevitDoc, curveloop, railingtype.Id,level.Id);
    transaction.Commit();
 }   

When I use revitNet DLL to create it,It comes the error:sketch is empty.

What is the reason for it. Thanks.

[1097461414]

My computer uses revit2020

[jeremy_tammik · Accepted solution]

I do not know revitNet DLL. I believe it is unsupported. Is it a way to try to use the Revit API without running a Revit session? That is illegal.