I have my custom grid which is being inherited by xamDataGrid. Below is the code:

<my:CustomGrid x:Name="uxSampleGrid"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
GroupByAreaLocation="None" Height="120" AutoFit="True"
DataSource="{Binding TransactionCollection}"

<my:CustomGrid.FieldSettings>
       <igDP:FieldSettings AllowEdit="False" CellClickAction="SelectRecord" />
</my:CustomGrid.FieldSettings>
<my:CustomGrid.FieldLayoutSettings>
        <igDP:FieldLayoutSettings AllowDelete="False" AllowAddNew="False" TextBlock.TextAlignment="Center" HighlightAlternateRecords="True"AutoGenerateFields="False"
         SelectionTypeCell="None" SelectionTypeField="None" SelectionTypeRecord="Extended" RecordSelectorNumberType="DataItemIndex" />
</my:CustomGrid.FieldLayoutSettings>

<my:CustomGrid.FieldLayouts>
    <igDP:FieldLayout>
          <igDP:FieldLayout.Settings>
             <igDP:FieldLayoutSettings AllowFieldMoving="No" RecordFilterScope="AllRecords" ReevaluateFiltersOnDataChange="True" />
         </igDP:FieldLayout.Settings>
   <igDP:FieldLayout.Fields>

     <!--DISPLAYING MY CUSTOM COLUMNS-->

<igDP:Field BindingType="UseAlternateBinding" AlternateBinding="{Binding SequenceNo}" Name="SequenceNo" Label="Txn Seq #" >
         <igDP:Field.Settings>
             <igDP:FieldSettings LabelWidth="80" CellWidth="80" AllowEdit="False"/>
         </igDP:Field.Settings>
</igDP:Field>

   <igDP:FieldLayout.Fields />

<my:CustomGrid.FieldLayouts />

<my:CustomGrid />

I am looking to display the first column as RowNumber and then other columns are populated from my datasource bound to grid. But I can only see data for my columns from datasource and NOT THE ROWNUMBER. 

Please let me know what can be the issue.

Thanks,

Abdi