GroupedGridview - A Customized GridView Control

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C#

ASP.NET

C#4.0

Gridview

Hi I have implemented a GroupedGridview using http://catalog.codeproject.com/Articles/32163/GroupedGridview-A-Customized-GridView-Control[^] but with this control I am allowing the user to click a row and the contents of that row are copied to textboxes for editing. The thing is when I hover over the 1st row of the Group all fields are highlighted but when I move to the next row in that group the grouped field is no longer highlighted but clicking the row still brings the grouped value to the textbox.
For example:

  ABC 123 - all this row would be highlighted for selection (1 ABC 123)
1 DEF 456 - only DEF 456 are highlighted
  GHI 789
  JKL 101112

Hope this makes sense, does anyone know of a work around for this?