Accessing registry through a dll project - error The type name 'RegistryKey' could not be found in the namespace 'Microsoft.Win32'

Question

Dear all,

When trying to call Registry.CurrentUser.OpenSubKey I am having The type name 'RegistryKey' could not be found in the namespace 'Microsoft.Win32'. This type has been forwarded to assembly 'Microsoft.Win32.Registry, Version=4.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' Consider adding a reference to that assembly.

even if including "using Microsoft.Win32;".

Same code works within program.cs

Any reason for this please and how I can resolve

Thanks

Answer 1

The RegistryKey type is defined in the assembly Microsoft.Win32.Registry. You are referencing it from an older assembly that is forwarding to the newer assembly but that assembly isn't included. Add a reference to the Microsoft.Win32.Registry assembly and your problem should go away.