check that you have the reference to InTheHand
and that you have a using InTheHand
on the code.
[EDIT]
1) see that you have the using InTheHand
in the top of your code.
2) if a wiggly red line appear under the line it means you need to reference a library where the name-space is.
3) Normally the name-space and the name of the file match, this sometimes is not the case and on this cases you need to check the documentation, but first try and on the project right click and select "Add Reference" then in "Assemblies" try to find the name-space or the name of the library you are using, if you cant find it try on Assemblies->Extensions, if you steel cant find it then you try the DLL and to do this you chose the "Browse" and the path is the path you downloaded the file.
PS: when you install a new Library you need to restart your visual studio to let it load the new assemblies, most times restarting the machine is not needed but it cant harm.