A 'select all' option on checkbox columns would be ideal, but even a was for us to "hack" it would work. I've even looked at creating derived column and cell, but don't see a way to specify specialized header cell to use.
answered on 14 Jul 2008, 03:55 PM
Thank you for writing.
Currently, RadGridView does not support Select All for a check box column. However, you could implement such functionality by using custom context menu for the header row cells.
Do not hesitate to contact me again if you need additional assistance.