Internal pullups in Colibri iMX6 GPIO pins

Are there any internal pullups in Colibri iMX6 GPIO pins? If so, is there a tool to set them?

And how can I programmatically change them in C#? Any example?

You can change them using our libraries:

If you download the library package you can find a chm help file with the documentation and samples, some of them are in C#.