I add mapinfo dll's my project but when i want to add namespace i take error.I add MapInfo.CoreEngine,MapInfo.CoreEngine.Wrapper,MapInfo.CoreTypes and MapInfo.WebControls.I search my dlls path thats correct.
I use MapExtreme 7.3
I solved error.MapXtreme work with .net framework 4.5.2.Install .Net framework 4.5.2 and your project target framework must be 4.5.2.