How to bind nested datagridview in WPF C#

Question

<DataGrid Margin="10 10 10 10" ItemsSource="{Binding}" Height="300" x:Name="dataGrid1" IsReadOnly="True" AutoGenerateColumns="False">

<DataGrid.Columns>

<!--Action Button Start-->

<DataGridTemplateColumn Header="Action">

<DataGridTemplateColumn.CellTemplate>

<DataTemplate>

<StackPanel Orientation="Horizontal">

<Border Margin="5" BorderThickness="1,1,1,1" BorderBrush="#D3D3D3" CornerRadius="2" >

<Label Cursor="Hand" Background="Yellow" ToolTip="Edit" MouseLeftButtonUp="Edit_OnClick" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" HorizontalAlignment="Right" VerticalAlignment="Center">

</Label>

</Border>

<Border Margin="5" BorderThickness="1,1,1,1" BorderBrush="#D3D3D3" CornerRadius="2" >

<Label Cursor="Hand" Background="Red" ToolTip="Delete" MouseLeftButtonUp="Delete_OnClick" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" HorizontalAlignment="Right" VerticalAlignment="Center">

</Label>

</Border>

</StackPanel>

</DataTemplate>

</DataGridTemplateColumn.CellTemplate>

</DataGridTemplateColumn>

<!--Action Button End-->

<DataGridTextColumn Header="ID" Binding="{Binding c_sid}" Width="SizeToHeader"/>

<DataGridTextColumn Header="Invoice Date" Binding="{Binding c_invoicedate}"/>

<DataGridTextColumn Header="Invoice No" Binding="{Binding c_invoiceno}"/>

<DataGridTextColumn Header="Partyname" Binding="{Binding c_partyname}"/>

<DataGridTextColumn Header="Hastee" Binding="{Binding c_hastee}"/>

<DataGridTextColumn Header="Tax" Binding="{Binding c_tax}"/>

<DataGridTextColumn Header="Discount" Binding="{Binding c_discount}"/>

<DataGridTextColumn Header="Total" Binding="{Binding c_total}"/>

</DataGrid.Columns>

<DataGrid.RowHeaderTemplate>

<DataTemplate>

<Expander Expanded="Expander_Expanded" Collapsed="Expander_Collapsed">

</Expander>

</DataTemplate>

</DataGrid.RowHeaderTemplate>

<DataGrid.RowDetailsTemplate>

<DataTemplate>

<ListView Name="Subgrid" ItemsSource="{Binding}" >

<ListView.View>

<GridView>

<GridViewColumn DisplayMemberBinding="{Binding c_sku}" Header="SKU" />

<GridViewColumn DisplayMemberBinding="{Binding c_qty}" Header="Quantity" />

<GridViewColumn DisplayMemberBinding="{Binding c_price}" Header="Price" />

</GridView>

</ListView.View>

</ListView>

</DataTemplate>

</DataGrid.RowDetailsTemplate>

</DataGrid>