Is it possible to add an item to the ColumnChooserGrid?
I want to add a 'Select All' option. That would set all the checkboxes to checked...
Could you please review the sample attached to this post and see if it meets your requirements.
Please feel free to let me know if I misunderstood you or if you have any other questions.
I am just checking about the progress of this issue. Please let me know If you need my further assistance on this.