Hi Matt

Sorry for the late response. I've tried your solution and it works but only (as you stated) if SelectTypeRecord is set to single. However i would like to have a solution for multiple selection, the same default behaviour of xamdatagrid.

HI,

 I am following up on this forum thread.
 If you need further assistance, please let me know.

 Sincerely,
 Matt
 Developer Support Engineer

HI,

 I made a few changes to your Xaml and Code Behind files.

 I set the FieldLayoutSettings' SelectTypeRecord to single.

 I wired up the Button Click event for your custom button.

 I added the following code in that event.

 private void customButtom_Click(object sender, RoutedEventArgs e)
        {
            Button btn = (Button)sender;
            if (btn.DataContext is Record)
            {
               // int i = 0;
                Record r = btn.DataContext as Record;
                r.IsSelected = true;
            }

        }

 I am attaching a sample project.

 Sincerely.
 Matt
 Developer Support Engineer

Attached is the sample application.

To replicate the issue, click once on the first recordselector then click the button on the next row.