topic Set document variable (in memory) in .NET Forum

Set document variable (in memory)

ym.56789 — Thu, 09 Feb 2023 19:39:04 GMT

Hi, I have a number of files where the variable VISRETAIN as to be updated.

I would like to do so by loading the document in memory.

I have the following code:

Dim myDB As New Database(False, True)
myDB.ReadDwgFile(file, FileOpenMode.OpenForReadAndAllShare, False, "")

Is there a way to set drawing variables from the database? And if I must get a document object, is there a way to load a document in memory?

(I found that I can set variables within a document as follows: acadDocument.Setvariable("DIMASZ",1.5).

Thanks

Re: Set document variable (in memory)

_gile — Thu, 09 Feb 2023 20:46:56 GMT

Hi,

The Database class exposes a Visretain property. you can simply do:

myDB.VisRetain = 0

or:

myDB.VisRetain = 1

Re: Set document variable (in memory)

ym.56789 — Fri, 10 Feb 2023 14:34:23 GMT

Thank you very much for your answer - I see I can access all other document variables in this manner as well.

Can you perhaps help me further though? I don't seem to know how to save the variable: (here's my code)

Dim myDB As New Database(False, True)
myDB.ReadDwgFile(file, FileOpenMode.OpenForReadAndWriteNoShare, False, "")
Using myTrans As Transaction = myDB.TransactionManager.StartTransaction
myDB.Visretain = 0
myTrans.Commit()
End Using

The code runs with no errors, but when I open up the file VISRETAIN is still at 1. (Additionally in the file properties the date modified property shows the file was not modified recently.)

Thanks

Re: Set document variable (in memory)

_gile — Fri, 10 Feb 2023 15:48:31 GMT

You have to save your database before disposing it.

Using myDB As New Database(False, True) myDB.ReadDwgFile(file, FileOpenMode.OpenForReadAndWriteNoShare, False, "") Using myTrans As Transaction = myDB.TransactionManager.StartTransaction myDB.Visretain = 0 myTrans.Commit() End Using myDB.SaveAs(file, DwgVersion.Current) End Using

Re: Set document variable (in memory)

ym.56789 — Fri, 10 Feb 2023 16:13:55 GMT

Thanks a lot!