Gridview Sorting/ Filtering not working

[Olena]

Hello
Hope you can see what is wrong in the code below.
<telerik:RadGridView
            ColumnWidth="*"
            Grid.Row="2"
            IsBusy="{Binding IsLoadingDataEntries}"
            ItemsSource="{Binding DataEntries}"
            EnableRowVirtualization="True"
            Margin="0,10,0,0"
            SelectionMode="Extended">
            <i:Interaction.Behaviors>
                <controls:SelectedItemsBehavior SelectedItems="{Binding ViewModel.SelectedDataEntries, Source={StaticResource Container}}"/>
            </i:Interaction.Behaviors>
            
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Category.Name}" Header="Kategori" IsFilterable="True" IsGroupable="True" ShowDistinctFilters="False"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Classification}" Header="Klassifisering" IsFilterable="True" IsGroupable="True" ShowDistinctFilters="False"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Date, StringFormat=d}" Header="Datum" IsFilterable="True" IsGroupable="True" ShowDistinctFilters="False"/>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Amount, Converter={StaticResource NumberToStringConverter}}" Header="Värde" DataFormatString="{}{0:N2}" TextAlignment="Right" IsFilterable="True" IsGroupable="True" ShowDistinctFilters="False"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>

        Private _dataEntries As VirtualQueryableCollectionView(Of DataEntry)
  Public Sub New(objectService As IObjectService)
            _dataEntries = New VirtualQueryableCollectionView(Of DataEntry)()
...
 DataEntries.LoadSize = 50
...
            AddHandler DataEntries.ItemsLoading, AddressOf OnDataEntriesLoading
...
end sub

  Public ReadOnly Property DataEntries As VirtualQueryableCollectionView(Of DataEntry)
            Get
                Return _dataEntries
            End Get
        End Property

 Private Sub OnDataEntriesLoading(sender As Object, e As VirtualQueryableCollectionViewItemsLoadingEventArgs)
            LoadDataEntries(e.StartIndex, e.ItemCount)
        End Sub

 Private Sub LoadDataEntries(startIndex As Integer, itemCount As Integer)
            IsLoadingDataEntries = True
            ObjectService.GetDataEntries(
                startIndex, itemCount,
                Sub(result)
                    DataEntries.VirtualItemCount = result.TotalItemCount
                    DataEntries.Load(startIndex, result.Items)
                    CreateNewEntry()
                    IsLoadingDataEntries = False
                End Sub)
        End Sub

Regards
Olena

[Vlad]

Hello,

 You need to use the collection FilterDescriptors to filter your data before loading using ItemsLoading event similar to our demos. 

All the best,
Vlad
the Telerik team

[Olena]

Thanks! Would you please provide me with some code exemplas and/or references.
Regards
Olena

[Vlad]

Hello,

 As I said in my previous reply - the code is part of our demos. 

Kind regards,
Vlad
the Telerik team

[Olena]

Well, as I can see Telerik provides DataVirtualization exempel using WCF RIA Services but its not my case. My application consumes an ordinary WCF.
Regards
Olena

[Vlad]

Hi,

 I'm afraid that there is no support out-of-the-box for filtering with plain WCF services - just for WCF RIA services. 

Regards,
Vlad
the Telerik team