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Asked: 2026-05-10T19:23:09+00:00

I’ve got an arbitrary list of .NET assemblies. I need to programmatically check if

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I’ve got an arbitrary list of .NET assemblies.

I need to programmatically check if each DLL was built for x86 (as opposed to x64 or Any CPU). Is this possible?

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  1. Look at System.Reflection.AssemblyName.GetAssemblyName(string assemblyFile).

    You can examine assembly metadata from the returned AssemblyName instance:

    Using PowerShell:

     [36] C:\> [reflection.assemblyname]::GetAssemblyName('${pwd}\Microsoft.GLEE.dll') | fl  Name                  : Microsoft.GLEE Version               : 1.0.0.0 CultureInfo           : CodeBase              : file:///C:/projects/powershell/BuildAnalyzer/... EscapedCodeBase       : file:///C:/projects/powershell/BuildAnalyzer/... ProcessorArchitecture : MSIL Flags                 : PublicKey HashAlgorithm         : SHA1 VersionCompatibility  : SameMachine KeyPair               : FullName              : Microsoft.GLEE, Version=1.0.0.0, Culture=neut...

    Here, ProcessorArchitecture identifies the target platform.

    • Amd64: A 64-bit processor based on the x64 architecture.
    • Arm: An ARM processor.
    • IA64: A 64-bit Intel Itanium processor only.
    • MSIL: Neutral with respect to processor and bits-per-word.
    • X86: A 32-bit Intel processor, either native or in the Windows on Windows environment on a 64-bit platform (WoW64).
    • None: An unknown or unspecified combination of processor and bits-per-word.

    I’m using PowerShell in this example to call the method.

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