Best way to extend generated classes

[Neil Mercer]

Hi,

I have a simple database that I have created Entity Diagrams for and am accessing data fine.  On one of the tables I would like to add a derived column that won't be persisted to the database. 

As one option I have a SQL view that reveals the original table plus the additional column.
In a previous version of this project (using OA 2009) I had extended the generated class to include a new column and do the necessary query to determine its value.

What is the recommended approach for QA 2010?  Ideally, does anyone have an example of the best way to extend the generated classes?

Thanks,
Neil.

[Damyan Bogoev]

Hi Neil Mercer,

You could do the following steps in order to achieve this goal:
1. Mark the class where the new property should be in as a partial;
2. Add a new class file which will contain section from the class. Here you could add the new property;
Using this approach in case of regenerating the class the changes will be saved in the new class file.
Hope that helps.

Greetings,
Damyan Bogoev
the Telerik team

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[Neil Mercer]

Hi Damyan.

That's what I ended up deciding on, so thanks for confirming it's the right approach.  So far it's working very well.

Cheers,
Neil.