i have a gridview in that
CO_RoomRent as [Room Rent],
CO_ExtrbedAmount as [Extra Bed Amount],
CO_ExtrapersonAmount as [Extra Person Amount],
CO_TotalRoomRent as [Total Amount],
CO_TransactionAmount as [Transaction Amount]
those are the fields
now in textbox i will give discount percentage
using that percentage
deduct that percentage
display
remaining value display in gridview
desktop application
c#
sql server2008
please help me