The DotSpatial.Projections library is a port of the popular proj4 c++ library to C# .Net. Since most of the code was mathematical transforms, this was fairly straight forward, so hopefully most of the code works as expected.

Projection Unit Test Results
Object Models

Sample Code
Reading ESRI .prj files
Reading Proj4 strings
Reproject a point using a Known Coordinate Systems
Adding a Geographic Coordinate System to a Feature Set

Last edited Sep 23, 2010 at 4:00 PM by Shade1974, version 1


mudnug Jun 3, 2011 at 4:29 PM 
The team is going to be releasing Projections as a nuget package (see Currently that nuget package targets .Net 3.5

Also, the symbols will become available at so you can step through the code without worrying about downloading and compiling the source. (See