Hi Malcolm,
Thanks for using Syncfusion products.
Your requirement of displaying images in the Navigatorbar can be achieved by removing the property "ImageURL='' " in ButtonBarItem, which gets add by default by setting the property
‘NavigatorBar’ to the GridGroupingControl. You can use the property “ImageURL” to set custom images for the ButtonBar. Please refer to the code snippet below.
[ASPX]
Please refer to the below link to download the sample application.
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=sample-79107-446928603.zipPlease let me know if you have any concerns.
Regards,
Ranjithkumar.