WPF Grid column filter doesn't have startswith and contains when use AutoGenerateColumns

[Ken]

Sorry my bad English,

There is my RadGridView

<telerik:RadGridView x:Name="DepartmentBalanceListRadGridView"
                                     ItemsSource="{Binding Display}"
                                     IsBusy="{Binding IsBusy}"
                                     IsReadOnly="True"
                                     ScrollViewer.VerticalScrollBarVisibility="Visible"
                                     AutoGenerateColumns="True"
                                     RowHeight="50"
                                     SelectionMode="Extended"
                                     CanUserFreezeColumns="False"
                                     RowIndicatorVisibility="Collapsed"
                                     GroupRenderMode="Nested"
                                     AutoExpandGroups="True"
                                     HorizontalAlignment="Stretch"
                                     VerticalAlignment="Stretch"
                                     VerticalGridLinesBrush="LightGray"
                                     ShowGroupFooters="True"
                                     ShowColumnFooters="True"
                                     CanUserResizeColumns="True"
                                     CanUserGroupColumns="False"
                                     ColumnWidth="*"
                                     AutoGeneratingColumn="DepartmentBalanceListRadGridView_AutoGeneratingColumn">

            <telerik:RadGridView.ControlPanelItems>
                <telerik:ControlPanelItem ButtonTooltip="Filtering Options">
                    <telerik:ControlPanelItem.ButtonContent>
                        <Button Background="Transparent">

                            <i:Interaction.Triggers>
                                <i:EventTrigger EventName="Click">
                                    <cal:ActionMessage MethodName="PrintDepartmentBalance">
                                        <cal:Parameter Value="{Binding ElementName=DepartmentBalanceListRadGridView, Path=Items}"/>
                                        <cal:Parameter Value="{Binding ElementName=DepartmentBalanceListRadGridView, Path=SelectedItems}"/>
                                    </cal:ActionMessage>
                                </i:EventTrigger>
                            </i:Interaction.Triggers>

                            <materialDesign:PackIcon Kind="Printer" Foreground="White" />

                        </Button>
                    </telerik:ControlPanelItem.ButtonContent>
                </telerik:ControlPanelItem>

            </telerik:RadGridView.ControlPanelItems>

            <telerik:RadGridView.Columns>

                <telerik:GridViewSelectColumn/>

            </telerik:RadGridView.Columns>

        </telerik:RadGridView>

Binding Display

private ObservableCollection<IDictionary<string, object>> _display;

public ObservableCollection<IDictionary<string, object>> Display
{
    get { return _display; }
    set
    {
         _display = value;
         NotifyOfPropertyChange(() => Display);
    }
}

now only 4 options 
is equal to, is not equal to, is null, is not null 

how can I add startswith and contains filter in the FilterControl ?

[Martin Ivanov]

Hello Ken,

The described options are available only in columns showing System.String objects. To show the needed options, you can change your numeric type to be a string. If this is not suitable for you, you will need to create a custom filtering control and implement whatever filtering you need there from scratch.

Regards,
Martin Ivanov
Progress Telerik