I create a List< Line> alpha and a List<List< Line>> beta.
Add to alpha a bunch of lines.
beta.AddRange(alpha);
Error:
Error (CS1502): The best overloaded method match for ‘System.Collections.Generic.List<System.Collections.Generic.List<Rhino.Geometry.Line>>.AddRange(System.Collections.Generic.IEnumerable<System.Collections.Generic.List<Rhino.Geometry.Line>>)’ has some invalid arguments
Error (CS1503): Argument 1: cannot convert from ‘System.Collections.Generic.List<Rhino.Geometry.Line>’ to ‘System.Collections.Generic.IEnumerable<System.Collections.Generic.List<Rhino.Geometry.Line>>’
What’s the problem? How is one of the category System.Collections.Generic.IEnumerable & the other System.Collections.Generic.List?
Thank you.
Line is a protected constructor and should be replaced by a List containing curves and then add them as NurbsCurve.
something like this:
Curve crv = new Line(pt0,pt1).ToNurbsCurve();
beta.Add(crv);
for your example, List<Line> should be replaced by List<Curve> and the Lines added as NurbsCurve.
benedict:
Line is a protected constructor and should be replaced by a List containing curves and then add them as NurbsCurve.
No - do not convert lines to NURBS curve.
Do this instead:
var line = new Line(pt0, p1);
var line_curve = new LineCurve(line);
beta.Add(line_curve);
– Dale
Oh, sorry I mislead then.
Must have missed out that one…
LineCurve? is that one new or did I miss it since ever?
Ben back in NooB modus 
