Incrementally rotate a curve using VB.net or C# - computational-geometry

Question

I am trying to incrementally rotate a curve using the codes below in c# and Vb.net (the editor already imports the necessary libraries). In my 3D modelling program i get overlapping lines instead of lines with different angles.
What am I doing wrong?
on C#:
private void RunScript(Curve ln, int x, double angle, ref object A)
{
List<Curve> lines = new List<Curve>();
Int16 i = default(Int16);
for(i = 0; i <= x; i++){
ln.Rotate(angle * i, Vector3d.ZAxis, ln.PointAtEnd);
lines.Insert(i, ln);
}
A = lines;
on VB.net:
Private Sub RunScript(ByVal ln As Curve, ByVal x As Integer, ByVal angle As Double,
ByRef A As Object)
Dim lns As New List(Of Curve)()
Dim i As Int16
For i = 0 To x
ln.Transform(transform.Rotation(angle * i, vector3d.ZAxis, ln.PointAtEnd))
lns.Insert(i, ln)
Next
A = lns

Answer 1

I need to duplicate the line before rotating the next one in the loop otherwise there is no trace of it.
In C#:
private void RunScript(Curve ln, int x, double angle, ref object A)
{
List<Curve> lns = new List<Curve>;
for (int = 0; i<= x; i++)
{
Curve copy = ln.DuplicateCurve();
copy.Rotate(angle * i, Vector3d.ZAxis, ln.PointAtEnd);
lns.Add(copy);
}
}
A = lns;
in VB.net:
Private Sub RunScript(By Val ln As Curve, ByVal x As Integer, ByVal angle As Double, By Ref A as Object)
Dim lns As New List(Of Curve) ()
For i As Integer = 0 To x
Dim nl As Curve = ln.DuplicateCurve()
nl.Transform(transform.Rotation(angle*i, vector3D.ZAxis, ln.PointAtEnd))
lns.Add(nl)
Next
A = lns
End Sub