I now it is possible with the connector line, however I prefer the nlineshape.

I have an NLineShape that I want to set to orthogonal mode. I don't want the line to be rotated and I couldn't find a way to disable rotation for the line. It looks like lines cannot be protected from rotating.

To prevent a line shape change its direction you shoul set its Rotate, ChangeStartPoint and ChangeEndPoint protections.

Best Regards,
Nevron Support Team

By doing so, that will prevent the line form extended.  For instance, if the line is an horizontal line, I want it to expand only horizontal.  By disable the end and starting point, that prevent it from expanding at all.  I don't want the line to extend diagonally, but horizontally.