In order to be used by Visual Studio, an assembly must be signed. The .Net Framework includes tools for creating and managing “key” files which are used for signing assemblies.
Preparing to Add a Key
I recommend opening a command window as an administrator to begin. As when you opened Visual Studio Express for Windows as an administrator, navigate the Windows Start menu and locate Command Prompt. Right-click Command Prompt, hover over “More,” and then click “Run as administrator” as shown in Figure 3-1.
Figure 3-1. Opening an administrator command window
When prompted, ...