I'm hoping this is possible: I need to be able to set multiple values from a custom CellEditor. For example, if I have an object with StateProvince and Country properties, I would like to provide a CellEditor with a ComboBox of state/provinces grouped by country that would automatically set the Country property as well as the StateProvince property.

I just don't know what the binding in the CellEditor needs to look like to make this work because the {xcdg:CellEditorBinding} and {xcdg:CellContentBinding} don't seem to give access to the object the entire DataRow is bound to? I tried the following but with no luck:

{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type xcdg:DataRow}}, Path=SourceObject.CountryName}

Any help is appreciated, thanks.

I had the same issue. You need to bind to the DataContext of the DataCell. The following is an example where I only wanted the CheckBox to be visible if another value in the object was true.

<xcdg:Column FieldName="DateActual" MinWidth="40" Title="Actual" Width="40">
<xcdg:Column.CellContentTemplate>
<DataTemplate>
<CheckBox HorizontalAlignment="Center" Visibility="<b>{Binding Path=DataContext, Converter={StaticResource VisibleIfCustomDate}, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type xcdg:DataCell}}}</b>" IsChecked="{Binding Mode=OneWay}" />
</DataTemplate>
</xcdg:Column.CellContentTemplate>
<xcdg:Column.CellEditor>
<xcdg:CellEditor>
<xcdg:CellEditor.EditTemplate>
<DataTemplate>
<CheckBox HorizontalAlignment="Center" Visibility="<b>{Binding Path=DataContext, Converter={StaticResource VisibleIfCustomDate}, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type xcdg:DataCell}}}</b>" IsChecked="{xcdg:CellEditorBinding}" />
</DataTemplate>
</xcdg:CellEditor.EditTemplate>
</xcdg:CellEditor>
</xcdg:Column.CellEditor>
</xcdg:Column>

Hope this was helpful.

You might also want to bind to a property on the current row's DataItem.

<ComboBox DockPanel.Dock="Bottom" ItemsSource="{Binding RelativeSource={RelativeSource AncestorType={x:Type xcdg:DataCell}},Path=((SomeObject)DataContext).PropertyA}" IsEditable="True" Foreground="Black" />