"Funnel" doesn't display when binding using converter

[Ralph]

Hi,

we're using Q2 2011 & when using an IValueConverter to bind a GridViewDataColumn it seems as though IsFilterable is ignored. (The "funnel" doesn't show)

<telerik:GridViewDataColumn DataMemberBinding="{Binding Converter={StaticResource MyConverter}}" IsFilterable="True"/>

Regards,
Ralph

[Rossen Hristov]

Hello,

The IValueConverter cannot and should not be used for filtering -- it is for display purposes only as described in this article. Please, read it to learn how filtering works.

"The DataMemberBinding IValueConverter and the DataFormatString of the column are used for UI purposes only. They can only change the appearance of data into something more user-friendly such as $ 2.22, but they do not play any role in the data engine. Filtering is always performed with raw data values."

And since you have bound your column to your entire business object (Path=.), which is not a filterable type, you don't see the filtering funnel. You can make your business object class filterable by following this article.

I hope this helps.

Regards,
Ross
the Telerik team

[Ralph]

Ah! Thanks for the quick reply Ross.