Thanks for your reply. Your workaround gave me an idea that is currently working.  It seemed to me that a new ''DataGridDetailDescription'' is created for each parent row, as opposed to using this object in a static way (no static methods).  So, I created my own workaround by changing my implementation of the DataGridDescription class ...

I had already implemented a DataGridDetailDescription.  It is working in the sense that I can expand any parent row and the child objects are displayed in child rows in a subgrid.  See the code below: (modified slightly to rename the names of my variables)   class ParentDetail : ...

I'm not sure how this post helped Henry, as it is not working for me. I've got the same exact problem.  I need to access the parent object when the InsertionRow is used, in order to properly the new child object.  The parent object is absolutely essential to properly creating the child object.  I created the above event ...

Could you please post a code sample of this?  I can't make any sense of what objects you are talking about. I've read all of the posts on this forum filed under the Master/Detail tag, and have yet to be able to find a solution to my problem. The problem is that I have a working Master/Detail grid set up and running.  When a new ...