Thanks Alex,

but I got
Error 1 'System.Windows.RoutedEventArgs' does not contain a definition for 'Record' and no extension method 'Record' accepting a first argument of type 'System.Windows.RoutedEventArgs' could be found (are you missing a using directive or an assembly reference?) C:\download\testColorLine\testColorLine\testColorLine\Window1.xaml.cs 70 25 testColorLine

private 

void expandingHandle(object sender, RoutedEventArgs  e)
{  
   var xx = (e.Record as DataRecord).Cells[0];
}

Steve

Hello Steve,

First thing that comes in my mind is using the IsExpanded property of the record and bind it to it.

Alex.

Alex, 

But I can't find  IsExpanded property  under  XamDataGrid.

Thanks!
Steve

Hello,

It is a property of the Record

Alex.

Hi Alex
Could you pelase porvide more info how to do bind to Record's property or provide a simple sample?
Thanks!

Steve