Extension methods of TMX API for GBX.NET features. Part of the ManiaAPI.NET library set.
$ dotnet add package ManiaAPI.TMX.Extensions.GbxConnects ManiaAPI.TMX with GBX.NET features.
using ManiaAPI.TMX;
using ManiaAPI.TMX.Extensions.Gbx;
// Pick one from TMUF, TMNF, Nations, Sunrise, Original
var tmx = new TMX(TmxSite.TMUF);
// Get the track object
var map = await tmx.GetTrackGbxNodeAsync(12345);
Console.WriteLine("Number of blocks: " + map.GetBlocks().Count());