Hi Puthirak,
Thank you for using Syncfusion product.
We have created a sample by using the MouseUp event to change the CellType of the clicked cell. Please refer the sample from the below link for your reference.
[Sample Link]
http://www.syncfusion.com/uploads/redirect.aspx?file=GC-UICellDemo-96427_20b56e92.zip&team=developmentLet us know if you need any other details.
Regards,
Jeraldes J