Since i could not get an exact answer on this question Distance of wgs point from a wgs defined line segment , does anyone know of a geodesy library that encompasses functionality for calculations while developing a GPS application?

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解决方案

There are a couple of open source projects on codeplex, DotSpatial and SharpMap. A lot of spatial functions are implemented in their libraries. If you could use any spatial database such as Spatialite or PostGIS then you will be able to perform a lot of spatial operations really quickly and without any hassle.

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