xdg-base-directory
.NET class for freedesktop XDG base directories specification
Install with nuget:
Install-Package Freedesktop.Xdg.BaseDirectory.Sources
Use it to find files:
using System.IO;
using MyNamespace.Freedesktop.Xdg;
var myFileName = BaseDirectory.FindDataFile (Path.Combine ("my-package", "data.file"));
if (myFileName == null) {
throw new FileNotFoundException ("Could not find data.file in XDG data directories");
}