How to select first/previous/next/last row in wpf DataGrid

Question

I've got a WPF application which contains a standard DataGrid showing a lot of data.

Now I want to add buttons to select the next/first/previous/last row.

Is there a way to tell the DataGrid to change the selection for me?

I tried to use

private void SelectNext_Click(object sender, RoutedEventArgs e)
{
  datagrid.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
}

but it does not work for me (does not change the selected item, sets just the cell focus to the first item instead).

Answer 1

private void SelectNext_Click(object sender, RoutedEventArgs e)
{
   if (dataGrid.Items.Count - 1 > datagrid.SelectedIndex)
   {
      datagrid.SelectedIndex++;
   }
}

private void SelectPrevious_Click(object sender, RoutedEventArgs e)
{
   if (dataGrid.SelectedIndex > 0)
   {
      datagrid.SelectedIndex--;
   }
}

private void SelectFirst_Click(object sender, RoutedEventArgs e)
{
   dataGrid.SelectedIndex = 0;
}

private void SelectLast_Click(object sender, RoutedEventArgs e)
{
   dataGrid.SelectedIndex = dataGrid.Items.Count - 1;
}

Answer 2

If you fill your datagrid with a datasource by databinding, you can do that

Example of button "next"

private void btnNext_Click(object sender, RoutedEventArgs e)
{
        ICollectionView view = CollectionViewSource.GetDefaultView(yourDataSource);
        view.MoveCurrentToNext();
}

The interface ICollectionView has all the methods you need for moving the current item

In XAML remember also to set

<DataGrid .....     IsSynchronizedWithCurrentItem="True" >