Filtering on a GridViewComboboxColumn with using a converter

[Abhinav]

Hi Telerik,

We have column data where values are coming in as integer values of 0 or 1 and we are using a converter (using convert and convertback) to convert the 0/1 values to "Y/N" (i.e. simple type to simple type).

The converter is working well, however, the default Filter Control is showing the values "N/N". The filter should be showing "Y/N" or "N/Y" values, instead.

Please find the XAML for the GridViewComboboxColumn below, bound using MVVM.

...

<telerik:GridViewComboBoxColumn DataMemberBinding="{Binding AnIntegerColumn, Converter={StaticResource IntegerToYNConverter}}" Header="AColumn" Width="80">
                    <telerik:GridViewComboBoxColumn.ItemsSource>
                        <x:Array Type="{x:Type sys:String}">
                            <sys:String>Y</sys:String>
                            <sys:String>N</sys:String>
                        </x:Array>
                    </telerik:GridViewComboBoxColumn.ItemsSource>

</telerik:GridViewComboBoxColumn>
...

Could you please advise?

 

Kind regards.

p.s. If there is a way to make this link fit our approach, please also advise: http://www.telerik.com/blogs/filtering-gridviewcomboboxcolumn-in-radgridview-for-wpf

[Stefan Nenchev]

Hello Abhinav,

Without having a sample that reflects your scenario we cannot be absolutely sure what is causing the issue, however, you can expose an additional property in your object which will return a string based on the integer value and eventually set this property to the FilterMemberPath of the column. I have attached a sample for your reference. 

Regards,
Stefan Nenchev
Telerik by Progress

[Abhinav]

Hi Stefan,

Thank you for your reply.

We really wanted to avoid creating another property to resolve the issue, however, if this is the only way, we will take a look.

 

Kind regards

[Stefan Nenchev]

Hi Abhinav,

In order to avoid using an additional property, you can consider using a GridViewDataColumn and declare a ComboBox within its CellTemplate rather than be using a GridViewComboBoxColumn. I have attached a modified sample for your reference.

Regards,
Stefan Nenchev
Telerik by Progress

[Abhinav]

Hi Stefan,

 

Thank you for your help, greatly appreciated. We'll give it a try and get back to you.

 

Kind regards

[Abhinav]

Hi Stefan,

Thanks for your response. Ultimately, we couldn't go with the attached solution, since our POCOs are wrapped in proxy types. To code a coerced property for each converted property over the lifetime of the application will be daunting.

 

Kind regards

[Stefan]

Hi Abhinav,

As I am not completely sure what your setup is, may I kindly ask you to share what is the obstacle to applying the approach with the CellTemplate? Is the approach of using this proxy class working as expected with a GridViewComboBoxColumn, but not applicable to defining the CellTemplate of the column? Generally, any details that you think might be related can be helpful.

Best Regards,
Stefan X1
Telerik by Progress