topic Re: Store data entered in a form in .NET Forum

Store data entered in a form

mecoman6GF27 — Fri, 16 Dec 2022 15:48:39 GMT

Hi everyone.

Do you think it is possible to memorize the data inserted in a form without using NOD?

Thanks a lot, bye.

Re: Store data entered in a form

_gile — Fri, 16 Dec 2022 16:04:23 GMT

Hi,

It depends on the kind of storing

In the current drawing only during the current session: you can store the data as instance members of a class or Document.UserData entries (see this topic)
Persistant in a drawing: typically xrecord or xdata, xrecords can be attached to a named dictionary (NOD) or an extension dictionary of some non purgeable object such as the layer "0", some symbol table, xdata should also be attached to some non purgeable object.
Persistant and accessible from any drawing: entries of a Registry key or data stored in an external file (.txt, .csv, .ini, .xml, .json, ...)

Re: Store data entered in a form

fieldguy — Fri, 16 Dec 2022 16:57:36 GMT

I have used the "dwgprops" custom category to store form information in the past. These properties are exposed to users. Link below

https://forums.autodesk.com/t5/net/need-to-add-custom-metadata-in-the-autocad-files-dwg/m-p/9875502#M67426

Re: Store data entered in a form

mecoman6GF27 — Sat, 17 Dec 2022 15:42:51 GMT

Hello and thanks for the replies.

I really think I'll have to use Xrecords connected to a NOD but I asked myself a question that I ask you too.

"Is it possible to create a NOD accessible only by my application and not by others? If yes, how?"

Thanks a lot, bye.

Re: Store data entered in a form

fieldguy — Sun, 18 Dec 2022 15:00:57 GMT

I don't think you can hide anything in a dwg file. Some user who digs around will find it and mess with it.

You could try "Properties.Settings"? Something like "MyAppnamespace.Properties.Settings.Default.somesetting".

That seems to work for text anyway (read / write).

Link: https://stackoverflow.com/questions/453161/how-can-i-save-application-settings-in-a-windows-forms-application

Re: Store data entered in a form

mecoman6GF27 — Mon, 19 Dec 2022 18:01:55 GMT

Hi everyone.
I'm still evaluating the best solution for my case and I would like to ask you some questions.
How should I go about:
1. Connect a new XRecord to layer 0?
2. See the list of XRecords connected to layer 0?
3. Read all the XRecords connected to layer 0 or one in particular?
Thanks and sorry for the questions (for you they will be trivial) but I still have to learn a lot.
Bye.

Re: Store data entered in a form

_gile — Tue, 20 Dec 2022 07:31:58 GMT

Xrecords belongs to DBDictionaries and are accessible by their "name" (key) which is unique within the owner dictionary.

There's two kinds of dictionaries:

- named dictionaries that belongs to a DBDictionary (typically the Named Objects Dictionary which is the root dictionary for named dictionaries). As Xrecords they are accessible by their name.

- extension dictionaries that belongs to any DBObject.

So, to store some xrecords, you could either use the extension dictionary of the layer 0 or simply create a new named dictionary in the NOD.

You can find in this reply some extension methods to read/write xrecord data. These extension methods are extracted from a largest library: Gile.AutoCAD.Extension.

Re: Store data entered in a form

mecoman6GF27 — Wed, 21 Dec 2022 08:32:17 GMT

hello and thank you very much to all.