Hi,

I'm trying to use a MultivalueConverter in a XamDataGrid.  I keep getting an error in the converter - the first value doesn't get set (the second one (ItemListLanguage) is fine.)  The converter itself works fine because I'm already using it in a TreeView control elsewhere.

Below is my code.  I've tried various things for the RelativeSource (i.e. nothing, TemplatedParent, and now Self) and I always get the same error - the value for "DisplayTitle" just doesn't get passed to the converter.  I've been playing with this a little too long and now I'm running in circles. I get the feeling it's something really stupid that I'm missing from working on it too long. :)  Here's the code (sorry for the formatting, I don't know how to post it in "pretty mode"):

       <igDP:XamDataGrid
            x:Name="SearchResultsGrid"
            Grid.Row="1"
            GroupByAreaLocation="None"
            SizeChanged="SearchResultsGrid_SizeChanged"
            RecordsInViewChanged="SearchResultsGrid_RecordsInViewChanged"
            RecordActivated="SearchResultsGrid_RecordActivated"
            >
            <igDP:XamDataGrid.Resources>
                <Style x:Key="DisplayTitleStyle" TargetType="{x:Type igDP:CellValuePresenter}">
                    <Setter Property="Template">
                        <Setter.Value>
                            <ControlTemplate TargetType="{x:Type igDP:CellValuePresenter}">
                                <TextBlock>
                                    <TextBlock.Text>
                                        <MultiBinding Converter="{StaticResource MultilingualStringConverter}">
                                            <MultiBinding.Bindings>
                                                <Binding Path="DisplayTitle" RelativeSource="{RelativeSource Self}"></Binding>
                                                <Binding
                                                    Path="ItemListLanguage">
                                                    <Binding.RelativeSource>
                                                        <RelativeSource
                                                            Mode="FindAncestor"
                                                            AncestorType="{x:Type local:ClassificationSearchControl}"
                                                    />
                                                    </Binding.RelativeSource>
                                             
                                                </Binding>
                                            </MultiBinding.Bindings>
                                        </MultiBinding>
                               
                                    </TextBlock.Text>
                                </TextBlock>
                            </ControlTemplate>
                        </Setter.Value>
                    </Setter>
                </Style>
            </igDP:XamDataGrid.Resources>
            <igDP:XamDataGrid.FieldLayoutSettings>
                <igDP:FieldLayoutSettings
                    DataRecordSizingMode="SizableSynchronized"
                    AutoGenerateFields="False"
                    ExpansionIndicatorDisplayMode="Never"
                    RecordSelectorLocation="None"
                    SelectionTypeField="Single"
                    SelectionTypeCell="Single"
                    SelectionTypeRecord="Single"
                    >
                </igDP:FieldLayoutSettings>
            </igDP:XamDataGrid.FieldLayoutSettings>

            <igDP:XamDataGrid.FieldLayouts>
                <igDP:FieldLayout>
                    <igDP:FieldLayout.SortedFields>
                        <igDP:FieldSortDescription
                            FieldName="Code"
                            Direction="Ascending"
                            >
                        </igDP:FieldSortDescription>
                    </igDP:FieldLayout.SortedFields>
                    <igDP:FieldLayout.FieldSettings>
                        <igDP:FieldSettings
                            AllowEdit="False"
                            AllowResize="True"
                            CellClickAction="SelectRecord"
                            />
                    </igDP:FieldLayout.FieldSettings>
                    <igDP:FieldLayout.Fields>
                        <igDP:Field
                            x:Name="CodeField"
                            Name="Code"
                            Label="{Binding CodeColumnHeader}"
                            >
                            <igDP:Field.Settings>
                                <igDP:FieldSettings
                                    LabelTextAlignment="Left"
                                    />
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field
                            x:Name="TitleField"
                            Name="DisplayTitle"
                            DataType="{x:Type sys:Object}"
                            IsScrollTipField="True">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings
                                    EditAsType="{x:Type sys:String}"
                                    CellValuePresenterStyle="{StaticResource DisplayTitleStyle}"
                                />
                            </igDP:Field.Settings>
                        </igDP:Field>
                    </igDP:FieldLayout.Fields>
                </igDP:FieldLayout>
            </igDP:XamDataGrid.FieldLayouts>
        </igDP:XamDataGrid>

Any idea?  I've browsed around on the forum and experimented a bit with the examples I found, to no avail.

Thanks,
Michel