Filter and Aggregate Functions with GridViewExpressionColumns

8 posts, 0 answers
  1. Heiko Görig
    Heiko Görig avatar
    23 posts
    Member since:
    Jun 2012

    Posted 17 Jan 2011 Link to this post

    Hello,

    Is it possible to enable filtering for expression columns and to use aggregate function over calculated values or do you plan to add these features?

    Regards,

    Heiko
  2. Yavor Georgiev
    Admin
    Yavor Georgiev avatar
    982 posts

    Posted 18 Jan 2011 Link to this post

    Hi Heiko Görig,

     We have plans to introduce filtering UI to the Expression column, but I cannot say exactly when this feature will be available. You can, however, use the new generic FilterDescriptor<T> class (you can read more about it here). You can use the expression in the GridViewExpressionColumn and programmatically build a boolean binary expression that you can use in the generic FilterDescriptor.

     You can also use the new generic AggregateFunction<TElement, TResult> and feed it the GridViewExpressionColumn's expression.

    Greetings,
    Yavor Georgiev
    the Telerik team
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  4. stauder
    stauder avatar
    9 posts
    Member since:
    Dec 2010

    Posted 08 Feb 2011 Link to this post

    Sorry, wrong post, erase it please
  5. Joel
    Joel avatar
    1 posts
    Member since:
    Feb 2011

    Posted 25 Jul 2011 Link to this post

    Hello,

    I am wondering if there is an update on when filtering will be enabled for the GridViewExpressionColumn?

    Is there a possible workaround to get the same filtering functionality of the GridViewBoundColumnBase?

    Thanks,
    Joel
  6. Nedyalko Nikolov
    Admin
    Nedyalko Nikolov avatar
    871 posts

    Posted 29 Jul 2011 Link to this post

    Hello Joel,

    This feature is in our TODO list, unfortunately I cannot commit with any specific date or release when it will be ready.

    Kind regards,
    Nedyalko Nikolov
    the Telerik team

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  7. Kumar
    Kumar avatar
    17 posts
    Member since:
    May 2011

    Posted 11 Nov 2011 Link to this post

    Any progress on this feature please?

    Thanks,
    Kumar
  8. Bastian
    Bastian avatar
    1 posts
    Member since:
    Jun 2012

    Posted 06 Dec 2011 Link to this post

    Hi,

    i also need this feature is there any progress?

    best regards

    Bastian
  9. Nedyalko Nikolov
    Admin
    Nedyalko Nikolov avatar
    871 posts

    Posted 09 Dec 2011 Link to this post

    Hello,

    We've made a research about adding filtering to GridViewExpressionColumn. Unfortunately we end up with a conclusion that we cannot add the "default" filtering control without some breaking changes, which is not an option. We are investigating some other approaches, but I cannot commit when we will add filtering functionality for GridViewExpressionColumn out-of-the-box. However for the time being you can take a look at the following blog posts - about creating custom filtering control (which in fact was the initial idea about filtering support for GridViewExpressionColumn).
    Sorry for the inconvenience caused.

    Link1
    Link2

    Regards,
    Nedyalko Nikolov
    the Telerik team

    Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>

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