Invalid Number of references

[chau.nguyen92]

Hi I wanted to create an aligned dimension. I followed exactly as Revit API docs:

Autodesk.Revit.DB.Line line = Autodesk.Revit.DB.Line.CreateBound(location1, location2);

ReferenceArray refArray = new ReferenceArray();

refArray.Append(line.GetEndPointReference(0));
refArray.Append(line.GetEndPointReference(1));

doc.Create.NewDimension(
doc.ActiveView, line, refArray);

However, I received error Invalid Number of references. I used revit 2018.2 

I have searched for this problems and see solutions on other forums. I tried to cast the start point and end point to reference but still receive the same error. Thanks in advance!

[MarryTookMyCoffe]

in revit lookup you can see that reference is null, use start point and end point

[RPTHOMAS108 · Accepted solution]

Just as in the UI I don't think you can dimension a line that isn't from actual geometry.

i.e. you need to create a DetailLine or ModelLine (both derive from CurveElement) and add the references to the array from those i.e.

Document.Create.NewDetailCurve(View, Line)

or

Document.Create.NewModelCurve(Curve, SketchPlane)

Then

CurveElement.GeometryCurve.GetEndPointReference(EndIndex)

[chau.nguyen92]

Yeah I tried different ways. Tried what MarryTookMyCoffee suggested but only adding new detailcurve works. Odd that the Revit API example not working. Thanks