How can I filter Jumplist at runtime?

[Michael]

Hi

When I add following code in constructor the filter works fine.

GenericFilterDescriptor<ProposedAppointmentClient> filter = new GenericFilterDescriptor<ProposedAppointmentClient>(
    (pac) =>
    {
        return pac.Worker.Name.Contains("Wa");
    }
);
FilterDescriptors.Add(filter);

Now I want change filter at runtime. For test purposes I implement following command:

private RelayCommand _setSevdailFilterCommand;

/// <summary>
/// Gets the SetSevdailFilterCommand.
/// </summary>
public RelayCommand SetSevdailFilterCommand
{
    get
    {
        return _setSevdailFilterCommand ?? (_setSevdailFilterCommand = new RelayCommand(
            () =>
            {
                FilterDescriptors = null;

                GenericFilterDescriptor<ProposedAppointmentClient> filter = new GenericFilterDescriptor<ProposedAppointmentClient>(
                    (pac) =>
                    {
                        return pac.Worker.Name.Contains("Se");
                    }
                );
                FilterDescriptors = new List<GenericFilterDescriptor<ProposedAppointmentClient>>();
                FilterDescriptors.Add(filter);
            },
            () => true));
    }
}

Now all items are visible. Why? 

[Ves]

Hi Michael,

Please, find attached a small example, showing this scenario. Basically, the implementation differs from yours in using an ObservableCollection and not replacing it, but clearing it before adding the new filter descriptors.

Best regards,
Ves
Telerik