If you follow this link you will find a very simple Visual Studio project showing sample webservices code.

https://community.sagecrm.com/files/folders/general_development_resources_non-dpp/entry1212.aspx

NOTE: This is NOT A DEMO APP. It isn't suitable to show a customer. Its only purpose is as my training aide memoir. I use it to remind myself how to do things in the API.

It also shows very nicely how bad my C# coding is and my complete inexperience of building windows applications. There is no support for this. If you download it then you are on your own!

All the normal caveats about strange downloads potentially laying waste to your computer or starting world war three apply.