how to integrate third party dll with microsoft dynamics ax 2012 and dll not recognized by x++

Hi,

I have a third party DLL but i need to use this DLL in dynamics ax 2012 and get data from ax and then pass the data to dll methods and print also using the dll methods.

When I copy the DLL in ax client development environment and add reference. dll is not recognized in x++ code.

Please give me your advise.

Thanks

Nawaz