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Editorial Team
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Asked: 2026-05-29T07:26:12+00:00

When I am trying to read a Silverlight 5 assembly via Mono.Cecil version 0.9.3.0,

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When I am trying to read a Silverlight 5 assembly via Mono.Cecil version 0.9.3.0, I am getting the following exception:

System.NotSupportedException: Version not supported: 5.0.5.0
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at Mono.Cecil.BaseAssemblyResolver.GetCorlib(AssemblyNameReference reference) in C:\programming\mono.cecil\jbevain-cecil-5df660e\Mono.Cecil\BaseAssemblyResolver.cs:line 200
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at Mono.Cecil.BaseAssemblyResolver.Resolve(AssemblyNameReference name) in C:\programming\mono.cecil\jbevain-cecil-5df660e\Mono.Cecil\BaseAssemblyResolver.cs:line 117
....

It happens because the reference in the Silverlight project is to mscorlib 5.0.5.0 while the GetCorlib function doesn’t seem to be handling these cases.

Is there a solution to this issue?

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1 Answer

  1. Editorial Team

    Cecil’s default resolver doesn’t handle Silverlight assemblies. It’s easy to fix. Just pass your own resolver to your assemblies, and make sure it can resolve Silverlight assemblies:

    var resolver = new DefaultAssemblyResolver ();
resolver.AddSearchDirectory ("path/to/silverlight/assemblies");

var assembly = AssemblyDefinition.ReadAssembly (
    assemblyFile,
    new ReaderParameters { AssemblyResolver = resolver });

    Also, I strongly suggest you update from 0.9.3 to a newer release.

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