Hi Rohit,
Thanks for your interest in Syncfusion Products.
To achieve the drag-and-drop of records in gridgroupingcontrol, you have to handle TableControlMouseDown, DragDrop, DragEnter, DragLeave and DragOver events accordingly.
Please refer to our KnowledgeBase in our website for more details.
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https://www.syncfusion.com/account/login?ReturnUrl=%2fsupport%2fdirecttrac%2fincidents and we hope you will take advantage of this system as well.
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Regards,
Rajadurai