Thanks Alan,Tim
Thank you for your reply.You spent valuable time
In mechanical design, in each assembly has a bom, the bom sets out the assembly of all the sub-assembly and parts of some information, such as: code, name, quantity, material, weight, etc., but these sub - assembly and parts in the model space is not necessarily a block reference, may be a line, arc, pline, etc., bom data is entered manually. It is not possible with the search block refer to the number of ways of doing.
The question now is: can be a folder of all the following dwg files of these bom data extraction, and how to process these data?