What is difference between RegAsm.exe and regsvr32? How to generate a tlb file using regsvr32?

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regsvr32 will load the library and try to call the DllRegisterServer() from that library. It doesn’t care what DllRegisterServer() actually does – it just calls that function and checks the returned value. You use it to register COM servers in unmanaged DLLs. It can’t generate a .tlb file.

regasm will register a COM-exposed .NET assembly as a COM server. You use it for .NET assemblies. It can generate a .tlb file given the assembly only – it inspects the type infromation stored in the assembly and includes the COM-exposed entities into the type library.

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