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....
More information
This package offers several Density-Peaks based algorithms for clustering.
The core algorithm relies on Rodriguez and Laio 2014 (see http://science.sciencemag.org/content/344/6191/1492.full)
Class library implementing advanced mathematical algorithms, transforms, and time series manipulations. Implementations favour simplicity and correctness.