Hello,

What event is triggered when a row is expanded in a Master/Detail Grid so i can refresh the data when i insert a new row so it gets its new primary key from the database in order for the user to add children for the newly added row?

 Thank you
 

There is no such event. An option would be to query the DataGridContext.HasDetails property or check if the current item has expanded details by calling the AreDetailsExpanded method.

A second option would be to create a new DataRow template and hook directly into the detail toggle button.