How to extract infomation from importance of dwg linked into revit by API?

[27925916]

after linking dwg into revit, I want to create a button which could have the same function like query function in revit below:

and I also want to allow users to pick different layers which stand for different elements like layers of beams or layers of walls, when user click my button.

But I have read lots of documents, there are two ways I found:one is exploding the importance, the other is analyzing its geometry, extract the solids and create FreeFormElements of them. but I compare the two ways and revit's  query function, I found the query function does'nt need to create modelline ,and could allow user to pick everything in importance like line or text, I am really confused whether there is any way to realize my function:when user click the designed button,they could choose to pick any layers or pick lines or text.

[jeremytammik]

The best and easiest way to explore the internals of a DWG file is to use the AutoCAD.NET API or RealDWG:

• AutoCAD.NET API -- https://forums.autodesk.com/t5/net/bd-p/152
• RealDWG -- http://usa.autodesk.com/adsk/servlet/index?siteID=123112&id=770257

Both of these can be used from within a Revit add-in.

The Revit API does not offer much to achieve what you are after.

Cheers,

Jeremy

[27925916]

is it nessary to get text infomation  to explode after dwg linked into revit?

I have used pickobject to get lines in importance, but I can't find way to get these layers which is described by text and get these text:

[27925916]

I have a question, if I pick a note containning text in revit , then how I get its information  by exploring the internals of a DWG?  the GraphicsStyleId in revit can have relationship with the internals of a DWG?

[NGM_AiYo]

have you found the way to solve this problem? @27925916 

[jeremy_tammik]

I see quite a number of other threads dealing with this topic here in the forum searching for "dwg text"... have you taken a look at those?

https://forums.autodesk.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...