I'm only begining of .net. Please help me, how can we define new object type in c#.net? thanks
AFAIK: You have to use ARX (C++) to create it. It can't be done in c#
http://www.cadalyst.com/cad/autocad/what039s-a-custom-object-4802
http://arxdummies.blogspot.com/2005/06/class-14-creating-custom-entity-step.html
It might be beneficial if you went into more detail e.g. what type of "object" are you hoping to create, what you need it to do, why you need it done that way, etc. There may be other options.
There is no one way to create an new type of entity or object that can constraint a multiple lines or polylines with an text with lenght of line? I wanna using VBA code for this purpose.
About all you can do is create a block using a field to refer to the length of the line.