A library for converting ESRI Shapefiles into simple GeoJson documents.
Using the library is pretty straight forward, check the unit test project or use the gist below as a guide:
https://gist.github.com/johnvcoleman/6db57c371ed8359f5547#file-gistfile1-cs
If you don't want to compile it yourself, you can grab it from NuGet: https://www.nuget.org/packages/Harlow/