Hi Ravinder,
Thanks for your interest in Syncfusion products.
Auto Indentation is possible with the EditControl, Please refer to the following user guide and the sample pointed in the document.
http://help.syncfusion.com/ug_92/User%20Interface/Windows%20Forms/Edit/default.htm?turl=Documents%2F44112autoindentation.htmLet me know if you need any further assistance.
Regards
Vallarasu S.