Assume that I have a vertical or a horizontal line, I try to add couple of ports to it, but when I rotate the line or change the direction of the line, I want the ports to remain steady. Currently, the ports keep moving, I couldn't find a way to prevent them from moving.

I try something like this

NLineShape myLine = new NLineShape(0, 0, 1000, 0);

//add the ports to the line
myLine .CreateShapeElements(ShapeElementsMask.Ports);

NDynamicPort midPoint = new NDynamicPort(entityLine.UniqueId, ContentAlignment.TopCenter, DynamicPortGlueMode.GlueToContour);
myLine .Ports.AddChild(midPoint);
myLine .Ports.DefaultInwardPortUniqueId = midPoint.UniqueId;

I try both the logical line, but still gives the same problem.

I try to put a series of points on a line like this picture, but when the line is rotated or moved, I want the ports to remain on the lines without moving or changing location

That's right, I want the ports to be fixed at their locations even when I move or rotate the line.