[dba-VB] Why are my data Context Objects soooo sloooow

Shamil Salakhetdinov shamil at smsconsulting.spb.ru
Thu Dec 3 09:08:28 CST 2009

Hello Mark --

OK, I suppose you can create custom DLL(s) working with LINQ to SQL in a
solution outside of your custom DNN solution, and then just use your custom
DLL within custom DNN solution - your LINQ to SQL objects from DLL should be
public and this DLL should also have its own config file...

I have done something like that but with POCO-objects
(http://en.wikipedia.org/wiki/Plain_Old_CLR_Object), which I used as
ObjectDataSources for web forms within DNN custom solutions' custom

Thank you.


-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of Mark Breen
Sent: Thursday, December 03, 2009 5:34 PM
To: Discussion concerning Visual Basic and related programming issues.
Subject: Re: [dba-VB] Why are my data Context Objects soooo sloooow

Hello Shamil,

In VS2008, when I create a folder in app_Code, and then create a new Linq to
SQL Class is it assigned the extention of dbml, default name is

It is these classes that are sooo slooow to do anything with.  I timed the
time it takes to just click create, drop a table onto the design surface,
and then click save.  It is taking 4 minutes to do that, so when I needed 20
- 25 objects or so, I have to sit like a donkey and click for almost two

It still takes four minutes to open and edit one.

A PITA for sure.

If I open the class as a standalone file, I can operate with
instant performance, but it does not play well with the project/ solution.

I have to say, I wish I knew more about these data classes and how they
really should be used in real world applications.



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