You can call 32bit c++ dll in any cpu c# project. This is not com method.

IPC_Work\ClientSideIntegration\bin\Debug
........\.....................\...\Release\ClientSideIntegration.dll
........\.....................\...\.......\ClientSideIntegration.pdb
........\.....................\...\.......\ClientSideMailbox.dll
........\.....................\...\.......\ClientSideMailbox.pdb
........\.....................\...\.......\CSMBWrapper.dll
........\.....................\...\.......\CSMBWrapper.pdb
........\.....................\...\.......\Inmc.dll
........\.....................\...\.......\Inmc.pdb
........\.....................\...\.......\Inmc.xml
........\.....................\...\.......\WebApplication.dll
........\.....................\...\Release
........\.....................\bin
........\.....................\ClientSideIntegration.csproj
........\.....................\ClientSideIntegration.csproj.user
........\.....................\ClientSideIntegration.sln
........\.....................\ClientSideIntegration.suo
........\.....................\ClientSideIntegration.v11.suo
........\.....................\.....................References\ClientSideMailbox.dll
........\.....................\...............................\WebApplication.dll
........\.....................\ClientSideIntegrationReferences
........\.....................\com.think3.PLM.Integration.Client\InvisibleWaitForm.cs
........\.....................\.................................\InvisibleWaitForm.resources
........\.....................\.................................\ServerSession.cs
........\.....................\.................................\SharedClientServerConstants.cs
........\.....................\com.think3.PLM.Integration.Client
........\.....................\obj\Debug\ClientSideIntegration.csproj.FileListAbsolute.txt
........\.....................\...\.....\ClientSideIntegration.csprojResolveAssemblyReference.cache
........\.....................\...\.....\ClientSideIntegration.dll
........\.....................\...\.....\ClientSideIntegration.pdb
........\.....................\...\.....\DesignTimeResolveAssemblyReferences.cache
........\.....................\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\.....................\...\.....\ResolveAssemblyReference.cache
........\.....................\...\.....\TempPE
........\.....................\...\Debug
........\.....................\...\Release\ClientSideIntegration.csproj.FileListAbsolute.txt
........\.....................\...\.......\ClientSideIntegration.csprojResolveAssemblyReference.cache
........\.....................\...\.......\ClientSideIntegration.dll
........\.....................\...\.......\ClientSideIntegration.pdb
........\.....................\...\.......\DesignTimeResolveAssemblyReferencesInput.cache
........\.....................\...\.......\ResolveAssemblyReference.cache
........\.....................\...\.......\TempPE
........\.....................\...\Release
........\.....................\obj
........\ClientSideIntegration
........\ClientSideMailbox.dll
........\.SMBWrapper\bin\Debug\CSMBWrapper.dll
........\...........\...\.....\CSMBWrapper.pdb
........\...........\...\.....\Inmc.dll
........\...........\...\.....\Inmc.pdb
........\...........\...\.....\Inmc.xml
........\...........\...\Debug
........\...........\...\Release\ClientSideMailbox.dll
........\...........\...\.......\ClientSideMailbox.pdb
........\...........\...\.......\CSMBWrapper.dll
........\...........\...\.......\CSMBWrapper.pdb
........\...........\...\.......\Inmc.dll
........\...........\...\.......\Inmc.pdb
........\...........\...\.......\Inmc.xml
........\...........\...\Release
........\...........\bin
........\...........\CSMBWrapper.csproj
........\...........\MailBox.cs
........\...........\obj\Debug\CSMBWrapper.csproj.FileListAbsolute.txt
........\...........\...\.....\CSMBWrapper.csprojResolveAssemblyReference.cache
........\...........\...\.....\CSMBWrapper.dll
........\...........\...\.....\CSMBWrapper.pdb
........\...........\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
........\...........\...\.....\ResolveAss

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