Use it like this before listview control
<Window.Resources>
<DataTemplate x:Key="FirstCell">
<StackPanel Orientation="Horizontal">
<CheckBox Name="chk1" IsChecked="{Binding Path=IsSelected,
RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}}"/>
</StackPanel>
</DataTemplate>
</Window.Resources>