I`m playing with Map control and GEOJSON. But ihave a problem - map control doesn`t show shapes from JSON. There is only white area with pan/zoom options. IIS Express is configured - MIME type for JSON is added from the box with VS 2017. I duplicated MIME definition in webconfig of my project. GEOJSON comes from Telerik example. I don`t know where to find the solution. By the way OpenStreetMap work very well as source.