[Solved] Sort and Filter functionality when using Converter in DataMemberBinding on GridViewDataColumn

[Luzius]

Hi

I use converters in data member bindings. But thus I lose the automatic filter and sort functionality. Is it possible to have this functionality even when using converters?

<telerik:RadTreeListView Grid.Column="1" Name="tlvLicMgmt" AutoGenerateColumns="False" IsFilteringAllowed="True" >
<telerik:RadTreeListView.ChildTableDefinitions>
<telerik:TreeListViewTableDefinition ItemsSource="{Binding SubNodes}" />
</telerik:RadTreeListView.ChildTableDefinitions>
<telerik:RadTreeListView.Columns>
<telerik:GridViewDataColumn x:Name="NodeTextAndIcon" Header="Name" CellTemplate="{StaticResource NodeTextAndIcon}" IsReadOnly="True" />
<telerik:GridViewDataColumn x:Name="colLicType" Header="Eval. Type" DataMemberBinding="{Binding Converter={StaticResource licTypeConverter}, ConverterParameter='AsText'}" IsReadOnly="True" />
</telerik:RadTreeListView.Columns>
</telerik:RadTreeListView>

Thanks

[Maya]

Hi Luzius,

Depending on your particular requirements, you may try to define the CellTemplate and CellEditTemplate of the column using an IValueConverter. I am sending you a sample project illustrating the proposed solution.
  

All the best,
Maya
the Telerik team

[Luzius]

Hi,

Thanks for your response. Changing my DataMemberBinding definition
from:

<telerik:GridViewDataColumn x:Name="colLicType" Header="Eval. Type"
 DataMemberBinding="{Binding Converter={StaticResource licTypeConverter}}" IsReadOnly="True" />

to:

DataMemberBinding="{Binding LicType, Converter={StaticResource licTypeConverter}}"

caused the filter symbol to show up. In addition I had to add the CellTemplate definition below to get the values displayed.

<telerik:GridViewDataColumn.CellTemplate>
    <DataTemplate>
        <TextBlock Text="{Binding Converter={StaticResource LicTypeConverter}}" />
    </DataTemplate>
</telerik:GridViewDataColumn.CellTemplate>

Now the controls for filtering are there, but if I open the filter dialog only the value of the first line is displayed as selectable choice of distinct filters. I found the answer to this in the documentation (http://www.telerik.com/help/silverlight/radtreelistview-features-filtering.html). Which says: Only the values at the highest level of the hierarchy are included in the distinct filter list.

Thanks,
Luzius