Home / how to tell if a dll is registered How to tell if a dll is registered 05/04/2021 How perform I discover whether a DLL file written in C# is registered or not programmatically?I already tried this code, but it doesn"t come off.You watching: How to tell if a dll is registeredIf I register a DLL file and also inspect making use of this code it returns. If I unregister it and run this same piece of code, it returns true aget. I"m providing the fullpath of the DLL file as discussion.We emerged an easy DLL file in Visual C++. After that we registered it. Now we desire to confirm wheteher it is registered.Bob, will certainly you replace the piece of code on your own, it is still hard for me?If I register a DLL file, is tright here an entry present in the registry? Shall I uncover those entries and judge wheteher the DLL file is registered or not?The last answer is functioning with some modifications. I looked in typelib instead of clsid.earwicker der:Anymethod, I have actually done it via a slight change. It"s working currently. c# .net Share Improve this question Follow edited Jul 25 "15 at 14:19 Peter Mortensen 27.9k2121 gold badges9494 silver badges123123 bronze badges asked Mar 27 "09 at 9:37 karthikkarthik 1 Add a comment | 7 Answers 7 Active Oldest Votes21You have to uncover out the GUID of a COM object characterized in the DLL. Then look at this regisattempt key:HKEY_CLASSES_ROOTCLSIDxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxxInprocServer32Replace the x"s via the GUID.It should have actually a default worth that includes the full path to the DLL.See more: How To Forget Wireless Network Windows 8, How To Remove A Saved Wi Share Improve this answer Follow answered Mar 27 "09 at 10:10 Daniel EarwickerDaniel Earwicker 108k3535 gold badges193193 silver badges273273 bronze badges 3 Add a comment | 5If you suppose registered in GAC, here is my consideration: to be registered in GAC, an assembly need to be signed via a strong name (have a public key token in it"s name).So you have the right to try fill it utilizing Assembly.Load(string), if you acquired FileNotFoundException - assembly was not registered in GAC.If got no error, however outcome Assembly.GetName().GetPublicKeyToken() is null or empty -- this mean you discovered assembly in application magazine, not in GAC. Share Improve this answer Follow answered Mar 27 "09 at 9:48 abatishchevabatishchev 91.8k7777 gold badges283283 silver badges420420 bronze badges Add a comment | 3You have the right to usage this:My.Computer.Regisattempt.ClassesRoot.GetSubKeyNames.Contains("gEncrypt.clsEncrypt")Wbelow "gEncrypt.clsEncrypt" is ComName.ClassName. Share Improve this answer Follow edited Jul 25 "15 at 14:23 Peter Mortensen 27.9k2121 gold badges9494 silver badges123123 bronze badges answered Jun 1 "11 at 16:12 javierjavier 3111 bronze badge Add a comment | 2Declare a guideline to InterfaceCall CoCreateInstance on the CLSID and IIDIf rerevolve value is not S_OK then class is not registered Share Improve this answer Follow answered Mar 27 "09 at 9:40 VinayVinay 4,67577 gold badges3131 silver badges4242 bronze badges Add a comment | 2course TestDll //Import your tested DLL right here public extern static int LoadLibrary(string lpLibFileName);try TestDll test = brand-new TestDll();catch(DllNotFoundException ex) return false; Share Improve this answer Follow edited Jul 25 "15 at 14:24 Peter Mortensen 27.9k2121 gold badges9494 silver badges123123 bronze badges answered Nov 19 "10 at 14:52 FrancoisFrancois 2111 bronze badge Add a comment | 2If you know the CLSID of the COM dll, you deserve to simply inspect if there"s a key via that CLSID on HKEY_CLASSES_ROOTCLSIDCLSID-of-your-COM-component or HKEY_CLASSES_ROOTWow6432NodeCLSIDCLSID-of-your-COM-component (Wow6432Node => 32-little COM registered on a 64-little machine)Here is an example:private bool IsAlreadyRegistered() making use of (var classesRootKey = Microsoft.Win32.RegistryKey.OpenBaseKey( Microsoft.Win32.RegistryHive.ClassesRoot, Microsoft.Win32.RegistryView.Default)) const string clsid = "12345678-9012-3456-7890-123456789012"; var clsIdKey = classesRootKey.OpenSubKey("Wow6432NodeCLSID" + clsid) ?? classesRootKey.OpenSubKey("CLSID" + clsid); if (clsIdKey != null) clsIdKey.Dispose(); return true; rerevolve false; Share Improve this answer Follow answered Dec 5 "15 at 1:12 C. Augusto ProieteC. Augusto Proiete 15.1k22 gold badges3838 silver badges5656 bronze badges Add a comment | 1 public extern static bool FreeLibrary(int hLibModule); public extern static int LoadLibrary(string lpLibFileName);public bool IsDllRegistered(string DllName) int libId = LoadLibrary(DllName); if (libId>0) FreeLibrary(libId); rerevolve (libId>0); Share Improve this answer Follow answered Mar 27 "09 at 9:40 BobbyShaftoeBobbyShaftoe 27.6k55 gold badges5050 silver badges7171 bronze badges 4 Add a comment | Your Answer Thanks for contributing an answer to Stack Overflow!Please be sure to answer the question. 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