The directory where the runtime files reside.
public static string ClrInstallDirectory { get; }
Value
The directory where all assemblies for the runtime resides.
Remarks
In Mono this directory contains the assemblies, it does not contain other configuration elements which are installed in a Unix compliant way.
Requirements
Namespace: System.Web
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0