grid filter compares cell values

[Jax]

I'm looking for a sample on how to programmatically add a filter that will compare cell values.

eg: Filter rows where cell B or Cell C values is different to Cell A value.

[Stefan Dobrev]

Hi Jax,

You can use the PredicateFilterDescriptor class used in this blog post. It allows you to define what ever expression you like as a filter predicate.

Best wishes,
Stefan Dobrev
the Telerik team

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[Jax]

Stefan,

Thanks - looks like it should work. It would be nice, however, not to have to import all those complicated
custom classes (PredicateWriter etc. ) into my source just to achieve a simple filter.

If I want to filter out records where I need to compare cell \ instance values, the implementation should be as simple as overriding a method on an InstanceFilter that returns a bool, and accepts a row instance as parameter.

That way all I have to worry about is analysing the instance properties to see if it should be filtered or not.

[Stefan Dobrev]

Hello Jax,

If this is too complicated you can use CollectionViewSource for filtering as illustrated here.

Kind regards,
Stefan Dobrev
the Telerik team

[Jax]

Stefan - although not as simple as my suggestion above - definitely more workable - Thanks.