Filter and Aggregate Functions with GridViewExpressionColumns

[Heiko Görig]

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

[Yavor Georgiev]

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

[stauder]

Sorry, wrong post, erase it please

[Joel]

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

[Nedyalko Nikolov]

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

[Kumar]

Any progress on this feature please?

Thanks,
Kumar

[Bastian]

Hi,

i also need this feature is there any progress?

best regards

Bastian

[Nedyalko Nikolov]

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