Hi Kiran,
Thanks for your interest in Syncfusion Products.
You need to create a custom celltype as in the below sample which is shipped with the browser samples.
\\Syncfusion\EssentialStudio\5.1\Windows\Grid.Windows\Samples\2.0\CustomCellTypes\DropDownFormAndUserControlSample
A custom CellType requires a model class and a renderer class. The model class handles the serialization requirements for the control and creates the renderer class. The renderer class handles the UI requirements of the cell.
For GridGroupingControl, custom celltypes has to be registered through TableModel.CellModels.Add function.
Refer this shipped sample for more details
\\Syncfusion\Essential Studio\5.1\windows\Grid.Grouping.Windows\Samples\FeatureSamples\CustomCellTypes
Here is a sample in GridGroupingControl with CheckedListBox cells.
http://www.syncfusion.com/Support/user/uploads/GGC_CustomCellType_9a3e118e.zipHave a nice time.
Regards,
Rajagopal