topic Get data from drawing without opening it in .NET Forum

Get data from drawing without opening it

dennis — Wed, 08 Feb 2017 14:04:02 GMT

...or can I open it as ReadOnly?

I want to gather some data from another drawing, specifically in my case, some block info and layout tab info. I took some code I had for "Design Center" like importing of blocks for insertion. But in this case, I would like to pull the data regardless if the drawing is in use or not. One work around, I thought of, is to copy the drawing to my temp folder then open it. But, I thought first to see if there is an easier way.

Current code I have so far, I feed the method the drawing name I want to read:

public static void fetchDwgData(Database acDb, Editor acEd, string dsDwg)

{

DocumentCollection acDm = acApp.DocumentManager;

Database dsDb = new Database(false, true);

try

{

dsDb.ReadDwgFile(dsDwg, System.IO.FileShare.Read, true, "");

ObjectIdCollection blkIds = new ObjectIdCollection();

using (Transaction acTrans = acDb.TransactionManager.StartOpenCloseTransaction())

{

BlockTable dsBlkTbl = (BlockTable)acTrans.GetObject(dsDb.BlockTableId, OpenMode.ForRead, false);

foreach (ObjectId btrId in dsBlkTbl)

{

using (BlockTableRecord btr = (BlockTableRecord)acTrans.GetObject(btrId, OpenMode.ForRead, false))

{

if (!btr.IsAnonymous && !btr.IsLayout)

{

//do stuff

}

dsDb.Dispose();

}

catch

{

//exiting due to error

}

Re: Get data from drawing without opening it

norman.yuan — Wed, 08 Feb 2017 14:20:18 GMT

Yes, you did it correctly in regard of getting data without opening it (in AutoCAD editor). So what is your question, then?

One minor thing, you may want to place dsDb.Dispose() in "finally{ } clause" to make sure the database is always disposed. Better yet, use

using (Database dsDb= new Database())

{

}

for more simplified code than try {...} finally{...}.

Re: Get data from drawing without opening it

dennis — Wed, 08 Feb 2017 15:19:18 GMT

Thanks for the suggestion Norman. The problem arises, if someone has the drawing open already, then I can't open the drawing "on the side". So, is there a way to Open the drawing "on the side" regardless if it is in use or not by another user? Or, do you think my thought to copy the drawing first to the temp folder is the way to go?

Re: Get data from drawing without opening it

_gile — Wed, 08 Feb 2017 15:29:59 GMT

Hi,

Try with:

dsDb.ReadDwgFile(dsDwg, FileOpenMode.OpenForReadAndAllShare, true, null);

Re: Get data from drawing without opening it

dennis — Wed, 08 Feb 2017 15:42:50 GMT

That's it Giles!

Thank you very much, I was just Googling around and was reading about the FileOpenMode method, thinking that would be my next 'try', then my email notification popped up regarding your reply. It works just as I need it to work. Which now, has me wanting to revisit a few of the programs I have written to make this change as well. Very clean, thank you.

Re: Get data from drawing without opening it

brianchapmandesign — Wed, 22 Feb 2017 23:42:14 GMT

Just a shot in the dark but if you're just trying to import borders, etc from paperspace and the viewports, you can use the Layout->from template option.