I have placed the following in my radgrid:
<telerikGrid:RadGridView.Columns>
<telerikGrid:GridViewToggleRowDetailsColumn MouseUp="GridViewToggleRowDetailsColumn_MouseUp" />
</telerikGrid:RadGridView.Columns>
When I click on the + sign to expand the row details, the GridViewToggleRowDetailsColumn_MouseUp event handler does not fire. Is there something I'm missing?