C# Accounting Software Source Code

Hello, I am basically looking for a C# Accounting Software Source Code, the program should be easy and simple to use and should cover all sorts of basic accounting needs like sale,purchase,inventory,partywise ledgers, profit n loss statement, balance sheet, trial balance etc Everything that basic accounting software should have, This if for those who already have it, Show me the example EXE file, If i like the software and the amount, I will buy it Note: I need the codes of the program with the Database. Thanks!