structure of my data is follows. it has 3 depth data.

class Panel

{

    int panelid;

    sting panelname;

   ObservableCollection<console> consoles;

}

class Console

{

   int panelid;

   int consoleid;

   string consolename;

   ObservableCollection<Sound> sounds;

}

class Sound

{

   int consoleid;

   int soundid;

   string sounddata;

}

// data provider

public ObservableCollection<Panel> GetPanelList()

{

     ObservableCollection<Panel> retVal = new ObservableCollection<Panel>();

     for ( int i = 0; i < 10; i++ )

    {

         Panel panel = new Panel();

         panel.panelid  = i;

         panel.consoles = new ObservableCollection<Console>();

         for ( int j = 0; j < 10; j++ )

         {

             Console console = new Console();

             console.panelid = i;

             console.consoleid = j

             console.sounds = new ObservableCollection<Sound>();

             for ( int k = 0; k < 10; k++ )

             {

                 Sound sound = new Sound();

                 sound.consoleid = j;

                 sound.soundid = k;

                 console.sounds.add(sound);

             }

             panel.consoles.add(console);

         }

    }

}

so, i had binding the Panels(ObservableCollection<Panel>) at XamDataGird.

however, my XamDataGrid  can display just 2 level data.

my FieldLayout of XamDataGrid is follows.

        <igDP:XamDataGrid x:Name="panelInfoGrid" DataSource="{Binding Path=PanelList, Mode=TwoWay}" AutoFit="True">
            <igDP:XamDataGrid.FieldLayoutSettings>
                <igDP:FieldLayoutSettings AutoGenerateFields="False"/>
            </igDP:XamDataGrid.FieldLayoutSettings>

            <igDP:XamDataGrid.FieldLayouts>

                <!-- Panel Information-->
                <igDP:FieldLayout >
                    <igDP:FieldLayout.Fields>
                        <igDP:Field Name="panelid" Label="panelid" IsScrollTipField="True" Visibility="Collapsed"/>
                        <igDP:Field Name="panelname" Label="name"/>
                    </igDP:FieldLayout.Fields>
                </igDP:FieldLayout>

                <!-- Console Information -->
                <igDP:FieldLayout>
                    <igDP:FieldLayout.Fields>
                        <igDP:Field Name="panelid" Label="panelid" Visibility="Collapsed"/>
                        <igDP:Field Name="consoleid" Label="consoleid" Visibility="Collapsed"/>
                        <igDP:Field Name="consolename" Label="consolename"/>
                    </igDP:FieldLayout.Fields>
                </igDP:FieldLayout>

                <!-- Sound Information -->
                <igDP:FieldLayout>
                    <igDP:FieldLayout.Fields>
                        <igDP:Field Name="consoleid" Label="consoleid" Visibility="Collapsed"/>

                        <igDP:Field Name="soundid" Label="soundid"/>
                        <igDP:Field Name="soundname" Label="soundname"/>
                    </igDP:FieldLayout.Fields>
                </igDP:FieldLayout> 

I want to display 3 level hierarchial data when  AutoGenerateFields="False"

How can i do this??