After 1.5 years of @holman's release of spark, I deciced to make a C# port. Meanwhile many planning and legal meetings are held and brownbags are organized. Now, Spark.NET is finally ready.
Using NuGet package manager, run the following command in the Package Manager Console
PM> Install-Package Spark.NET
or alternativelty, right-click to your project in Visual Studio → Manage NuGet Packages → Search "Spark.NET" → click Install. Reference will be added to your project automatically.
Just import the namespace
using SparkNet;
and pass numbers
Spark.Render(0, 30, 55, 80, 33, 150);
(returns ▁▂▃▄▂█)
alternatively, you can pass IList<double> to Render method. It supports floating point numbers as well.
It does not work on cmd.exe and thus command line programs due to shitty old fonts inherited from late 80s, however it will work on window applications.