c# accounting system using MYSQL w/ source code, user guide

I need sample at least 1 module of accounting system and 1 report of that module using crystal report because of bad experience, i hired from a freelancer and result of failure to finish previous project and poor programming skills accounting System Requirements Must be done in c# language MYSQL version mysql-5.5.15-win32 Details: • Accounts Recievable 1. Sales Order 2. Invoice 3. Cash Recepits 4. Statement of Account • Accounts Payable 1. Request for Payment 2. Accounts Payable Voucher 3. Check Voucher 4. Check Writer • Bank Transaction 1. Cash Receipts Deposit 2. Clearing 3. Check Release 4. Post Check Release 5. Check Monitoring 6. Cash Monitoring • General 1. General Journal Entry 2. Debit-Credit Memo 3. Closing • Financial Statement 1. General Ledger 2. Trial Balance 3. Balance Sheet 4. Income Statement • Reports (crystal report) 1. List 2. Customer 3. Aging 4. Transaction Audit Trail • Books 1. Sales Journal 2. Cash Disbursement Journal 3. Cash Receipts Journal 4. Purchase Journal • Tools/ Backup 1. Year End Closing 2. Year End Backup