Get the Selected RowIndex of Listview in WPF

Hi,

How to get the selected Row Index of ListView in WPF.
When i try with listView1.SelectedIndex it returns -1.but not returning Row Index....

Below is my listview .xaml code

  <ListView Name="listView1s"  ItemContainerStyle="{StaticResource CustomListViewItemStyle}"   ItemsSource="{Binding}>
                   
                    <ListView.View>
                        <GridView AllowsColumnReorder="False" >
                            <GridView.ColumnHeaderContainerStyle>
                                <Style>
                                    <Setter Property="FrameworkElement.Height" Value="23"/>
                                </Style>
                            </GridView.ColumnHeaderContainerStyle>
                            
                            <GridViewColumn Width="70" Header="Job Id" >
                                <GridViewColumn.CellTemplate>
                                    <DataTemplate >
                                        <Label>
                                            <Hyperlink  Cursor="Hand" TextDecorations="None" Click="HyperLinkJobId_Click" Tag="{Binding JobID}">
                                                <TextBlock Name="text" Text="{Binding JobID}" ToolTip="{Binding JobID}"></TextBlock>
                                            </Hyperlink>
                                        </Label>
                                    </DataTemplate>
                                </GridViewColumn.CellTemplate>
                            </GridViewColumn>
          ..........
          .....................
....................
    ....
</ListView>

Syed Shakeer Hussain