Need dot net API for handrail connection.

[vaibhav.bhandari]

I am looking for dot net API for connection of handrail. Any help would be appreciated.
Please refer image for the connection type I am looking for.

[orasquier]

Hello, I am using this Command: 

^C^C_AstM4CrConByVB RailingJointHandrail

Regards

[vaibhav.bhandari]

Thanks, I am aware of this command. But I am specifically looking for dot net API to perform this operation over straight beam(round profile) or beam from polyline3d