Visual Designer / Context support for "row version" based Concurrency Control

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  1. Mike
    Mike avatar
    1 posts
    Member since:
    Jul 2010

    Posted 03 Nov 2010 Link to this post

    To what extent do the concepts explained in :

    This recent blog :   Telerik OpenAccess ORM Concurrency Control 

    This older KB Article :  How to: Handle Optimistic Concurrency with OpenAccess

    relate to projects using a Domain Model build with the Visual Designer and accessed with the ObjectContext?. 

    Basically, I'm doing a Web application presenting SQL Server data with timestamp columns in every table through RadControls for ASP.Net Ajax and want to understand what the revised Open Access ORM offers out-of-the-box to help avoid one user overwriting another user's changes.

  2. Serge
    Serge avatar
    375 posts

    Posted 08 Nov 2010 Link to this post

    Hello Michael,

    Most of the concepts explained in these articles are correct. While the design time of OpenAccess has changed and we are introducing new features and are polishing old ones, the concurrency control has been left untouched. We will take notice and update the new documentation regarding concurrency. However for the time being you can use it.

    In order to use a timestamp column for concurrency you need to select the class in the diagram, press F4 and in the property pane for concurrency mechanism select backend. Specify the concurrency member as the timestamp property you desire. This should do the trick.

    I hope this is helpful and please make sure to address any other issues you face with us.

    Best wishes,
    the Telerik team
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