This is a project I started working on in 2019, to make it easy to use the API and the MumbleLink integration in .NET applications. My goals were to make the library feature-complete, well tested and well documented. This took quite a while as I have a full time job (in software) and I'm also an active player (with over 37,000 AP), but I now feel like I've accomplished all of these goals, and I'm ready to share my work with you.
Code: https://github.com/sliekens/gw2sdk
NuGet: https://www.nuget.org/packages/GW2SDK/
Release notes: https://github.com/sliekens/gw2sdk/releases
User guide: https://sliekens.github.io/gw2sdk/guide/
Object model reference: https://sliekens.github.io/gw2sdk/api/GuildWars2.html
All code is provided as-is under the MIT license. Please enjoy.