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copied!<p>I finally found the way. I created a new AppDomain in wich i ran the method to get the cpu serial and then unloaded that domain so the System::Management library that was causing problems got unloaded.</p> <p>ref class MarshalByRefType : MarshalByRefObject { public: // Call this method via a proxy.</p> <pre><code>std::string GetCPUID() { //char * chp = (char *) System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(R671::R671::Value()).ToPointer(); std::string lsCPUID = ""; //return lsCPUID.assign(chp); try { System::Management::ManagementObjectCollection^ moReturn = nullptr; System::Management::ManagementObjectSearcher^ moSearch ; moSearch = gcnew System::Management::ManagementObjectSearcher("Select * from Win32_Processor"); moReturn = moSearch->Get(); for each ( System::Management::ManagementObject^ mo in moReturn ) { char * chp = (char *) System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(mo["ProcessorID"]->ToString()).ToPointer(); lsCPUID.assign(chp); } } catch(System::Exception^ ex ) { } AppDomainSetup^ ads = AppDomain::CurrentDomain->SetupInformation; String^ str = String::Format("AppName={0}, AppBase={1}, ConfigFile={2}", ads->ApplicationName, ads->ApplicationBase, ads->ConfigurationFile); char * chp = (char *) System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(str).ToPointer(); lsCPUID.assign(chp); return lsCPUID; } </code></pre> <p>}</p> <pre><code>class Loader { std::string GetCPUID() { String^ callingDomainName = Thread::GetDomain()->FriendlyName; // Construct and initialize settings for a second AppDomain. AppDomainSetup^ ads = gcnew AppDomainSetup(); ads->ApplicationBase = "file:///" + Assembly::GetExecutingAssembly()->Location; ads->DisallowBindingRedirects = false; ads->DisallowCodeDownload = true; ads->ConfigurationFile = AppDomain::CurrentDomain->SetupInformation->ConfigurationFile; // Create the second AppDomain. AppDomain^ ad2 = AppDomain::CreateDomain("AD #2", AppDomain::CurrentDomain->Evidence, ads); String^ sam = R671::R671::typeid->FullName; // Create an instance of MarshalbyRefType in the second AppDomain. // A proxy to the object is returned. MarshalByRefType^ mbrt = (MarshalByRefType^) ad2->CreateInstanceFromAndUnwrap( Assembly::GetExecutingAssembly()->Location, MarshalByRefType::typeid->FullName ); string lsCPUID; //char * chp = (char *) System::Runtime::InteropServices::Marshal::StringToHGlobalAnsi(mbrt2->Value()).ToPointer(); lsCPUID = mbrt->GetCPUID(); try { AppDomain::Unload(ad2); } catch ( AppDomainUnloadedException^ /*e*/ ) { } return lsCPUID; } void Load() { //do things std:string cpuid = this->GetCPUID(); //do things //load c# library and open forms } } </code></pre>

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