windows desktop script software for Amazon order API C# .Net

Looking for script that does following 1. Get AMazon orders using MWS API 2. Convert orders into different XML format and save Script will be put on scheduled task on windows server / pc... But script need to remember last run / order and make sure it doesn't generate duplicate xml. For 1,2 we don't need any interface / ui 3. Here we will have small interface. Use open software. It will have upload button. User can upload csv file with order ID and shipping details.. 4. Tool send order details to Amazon MWS Feed API. Please write 'iread' before application and mention any previous amazon api work.