I have been given a project developed under Visual Studio 2005 for a smart device (i.e. Windows CE) which targets .net compact framework 2.0. I have imported the project into Visual Studio 2008 with no problem. However, I want to change the project to target .net compact framework 3.5. If I go to the project properties, applications tab, I see a combo box labled "target framework." However, it is grayed out. If I create a sample Windows application in Visual Studio (i.e. not a smart device) and go to that same properties screen, that combo box is enabled, allowing me to select a different .net framework. It appears that Smart Devices/.net compact framework projects do not allow changing the target framework.
Does anyone have any solution to this problem? I want to target 3.5 since we may be modifying this application to use new features available in 3.5.