C# code to connect Epson TM-T88V printer to cash drawer

Need someone who already has the script, or who can make it work in a day. Need to open the cash drawer using c# windows form application. The cash drawer is connected to printer with a phone cable and the printer is connected to pc with thru LAN/Ethernet. Need a code, which can open the cash drawer when cash transactions occur, but not when a credit card transaction occurs. Further details can be discussed with selected candidate.