Namespace is missing in the example code for GPIO - VF61 in C#

We want to control the GPIO in our application using C# (windows forms), When we downloaded and compiled the example code Given here " " it is showing error " Error 1 The type or namespace name ‘gpio’ could not be found (are you missing a using directive or an assembly reference?) "
Can we have a proper example code given for controlling gpio using c# .
Carrier Board : Viola Plus
OS : Windows 7 CE


You need to also download this package → Toradex CE Libraries and Code Samples | Toradex Developer Center

From this package you need to add file → tdxalllibraries.cs to this C# project.

You also need to copy TdxAllLibrariesDll.dll to your target device in the same folder as you are deploying application.

We removed this file because we update libraries all the time and we do not want to redistribute old files.