Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
Friend assembly reference 'reference' is invalid. Strong-name signed assemblies must specify a public key in their InternalsVisibleTo declarations.
A strong name signed assembly can only grant friend assembly access, made with the InternalsVisibleToAttribute, to other strongly signed assemblies.
To resolve CS1726, either sign (give a strong name to) the assembly to which you want to grant friend access, or don't grant friend access.
For more information, see Friend Assemblies (C# Programming Guide).
Example
The following sample generates CS1726.
// CS1726.cs
// compile with: /keyfile:CS1726.key /target:library
using System.Runtime.CompilerServices;
[assembly:InternalsVisibleTo("UnsignedAssembly")] // CS1726
// try the following line instead
// [assembly:InternalsVisibleTo("SignedAssembly, PublicKey=0024000004800000940000000602000000240000525341310004000001000100031d7b6f3abc16c7de526fd67ec2926fe68ed2f9901afbc5f1b6b428bf6cd9086021a0b38b76bc340dc6ab27b65e4a593fa0e60689ac98dd71a12248ca025751d135df7b98c5f9d09172f7b62dabdd302b2a1ae688731ff3fc7a6ab9e8cf39fb73c60667e1b071ef7da5838dc009ae0119a9cbff2c581fc0f2d966b77114b2c4")]
class A {}