Asp.net website. Need to add new contact to existing list in Campaigns. I've managed to get the ZSC key for
Campaigns and the list key for the relevant list. I've also added the Zoho.Api NuGet package in my Visual Studio project. Where do I go from here?

Can someone please provide a link to an example of adding a new contact to an existing campaign list from c# code of a website.

Thanks.