Mono's Registry Settings When you install Mono under Windows the installer adds a registry key under HKEY_LOCAL_MACHINE\SOFTWARE\Novell\Mono, and the values entered here can be used to detect where Mono is. [HKEY_LOCAL_MACHINE\SOFTWARE\Novell\Mono] DefaultCLR=1.2.6 [HKEY_LOCAL_MACHINE\SOFTWARE\Novell\Mono\1.2.6] FrameworkAssemblyDirectory=C:\Program Files\Mono-1.2.6\lib MonoConfigDir=C:\Program Files\Mono-1.2.6\etc SdkInstallRoot=C:\Program Files\Mono-1.2.6 Method 2 SharpDevelop uses this helper class to detect where Mono is located using System; using System.IO; using System.Security; using Microsoft.Win32; /// /// ///