Please upgrade to version 12 (Search ThinkGeo.Core on NuGet) if possible. Version 12 works with both .NET Framework and .NET Core, has much less dependencies and many other benifits over 10.0. DotDensity Style is included in the main package ThinkGeo.Core in Version 12....
Provides the most common unit for length, weight, area, volume and temperature and their conversion from one to the other.
Also provides the ability to use complex units in the style of a/b
Also provides the ability to convert from volumes to weights (and vice versa) using density