CreateFilterExpression called 4 times

[Patrick]

Hello,
I have created a custom filter for the GridView and, when the filter is active, the CreateFilterExpression method on my filter is called 4 times. This is a waste of resources.
Patrick

[Rossen Hristov]

Hi,

The filtering expression is re-evaluated when either:

1. The FilterDescriptors collection raises a CollectionChanged event.
2. Something inside a filter in this collection changes and it raises the ItemChanged event.

Regards,
Rossen Hristov
Telerik