I am not sure about which form you are talking about Web or Windows. You can design it by your own. Next thing is to get data from FORM and insert in Oracle database. Follow below links that may help you:
http://www.c-sharpcorner.com/uploadfile/mahesh/working-with-oracle-databases-using-ado-net/
http://www.java2s.com/Tutorial/CSharp/0560__ADO.Net/DoaninsertcommandtoOracledatabase.htm
https://www.codeproject.com/Articles/1155/Simple-ADO-NET-Database-Read-Insert-Update-and-Del