Hi Sim,
You need to resize the columns to fit over the grid's client area, by handling Grid.Model.QueryColWidth event as explained in these Knowledge Base(KB) articles:
How can I have my grid auto adjust column widths so that the columns completely fill the grid''s client areahttp://www.syncfusion.com/support/kb/grid/Default.aspx?ToDo=view&questId=304Also, take a look into this sample in the browser samples shipped with the product.
C:\Program Files\Syncfusion\Essential Studio\4.2\Windows\Grid\Samples\DataBound\GridDataBoundImageCell sample
Let me know if you need any further assistance.
Thanks for using Syncfusion Products.
Regards,
Rajagopal