WPF MVVM retrieve datagrid selected rows
I have a DataGrid with checkbox implemented on it using this code which I found on the internet.

    <my:DataGrid.RowHeaderTemplate>
      <DataTemplate>
        <Grid>
          <CheckBox IsChecked="{Binding Path=IsSelected, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:DataGridRow}}}" />
        </Grid>
      </DataTemplate>
    </my:DataGrid.RowHeaderTemplate>

But, how can I get the selected rows? I am using WPF MVVM.
WPF MVVM retrieve datagrid selected rows
===

I have a DataGrid with checkbox implemented on it using this code which I found on the internet.

    <my:DataGrid.RowHeaderTemplate>
      <DataTemplate>
        <Grid>
          <CheckBox IsChecked="{Binding Path=IsSelected, Mode=TwoWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type my:DataGridRow}}}" />
        </Grid>
      </DataTemplate>
    </my:DataGrid.RowHeaderTemplate>

But, how can I get the selected rows? I am using WPF MVVM.