Ah, 

Ok, i understand now. 

However, the xamGrid needs an  ItemsSource. so you won't be able to to bind it to a single row that doesn't belong to a collection.Unless you exposed another property on your data object, that would be a collection that contains 1 item, which would be itself. 

Or, depending on how you want to display your data, you could simply use a horizontal ListBox, Grid panel, or event a StackPanel to display your other properties and have the bindings hard coded in the DataTemplate. 

-SteveZ

I have multiple column and ColumnLayout is showing it one below the other

I just want extra columns of same row to be displayed in the expansion

Is that doable?

Hi, 

Yes, you can specify the Columns in the nested xamGrid. 

But you can also do the same with ColumnLayouts. Is there a reason you're not just using a ColumnLayouts? The xamGrid does support hiearchy.

-SteveZ

So can I give

In original grid

 <ig:TemplateColumnLayout Key="ID" Template="{StaticResource DataRowTemplate}" />

In expansion as

<DataTemplate x:Key="DataRowTemplate">
            <ig:XamGrid  ItemsSource="{Binding ID}"/>

</DataTemplate>

And can I give set of columns in the nested xamgrid that I need?

The xaml would look something like this:

 <ig:XamGrid.Columns>

                <ig:TemplateColumnLayout Key="Authors">

                    <ig:TemplateColumnLayout.Template>

                        <DataTemplate>

                            <ig:XamGrid Height="200" ItemsSource="{Binding Authors}"/>

                        </DataTemplate>

                    </ig:TemplateColumnLayout.Template>

                </ig:TemplateColumnLayout>

            </ig:XamGrid.Columns>

Note: the DataContext is the row's Data.

-SteveZ