CreateModelCurve.cs

DetailCurve CreateModelCurve(Document doc, Autodesk.Revit.DB.View view, Autodesk.Revit.DB.XYZ point1, Autodesk.Revit.DB.XYZ point2)
        {
            using (Transaction tran = new Transaction(doc))
            {
                tran.Start("change");
                Line line = Line.CreateBound(point1, point2);
                DetailCurve detailCurve1 = doc.Create.NewDetailCurve(view, line);
                tran.Commit();
                return detailCurve1;
            }
        }