While IronRuby will make short work of talking to your .NET dll (it’ll be literally no code at all), it was abandoned by microsoft, and it never got a large enough open source community to keep it going after that event. I wouldn’t recommend it these days Regarding the COM solution, this may actually be … Read more
One thing for sure, you will never be able to communicate with the local machine hardware without installing some special binaries (and run it with appropriate privileges) on the local machine. However, that doesn’t mean you necessary need to use an ActiveX component and stay stuck with Internet Explorer. Of course, you could also develop … Read more
The .NET / COM interop is well designed, and works correctly. In particular, the .NET Garbage Collector correctly tracks COM references, and will correctly release COM objects when they have no remaining runtime references. Interfering with the reference counts of COM object by calling Marshal.ReleaseComObject(…) or Marshal.FinalReleaseComObject(…) is a dangerous but common anti-pattern. Unfortunately, some … Read more
Try following these steps: Make sure both projects, unmanaged C++ and managed C# have the same bitness, either x86 or x64. Let’s say it’s x86, for clarity. Open Admin Command Prompt and register your COM DLL: C:\Windows\SysWOW64\regsvr32.exe c:\full-path\ComLib.Interop.dll Run Visual Studio as Admin. Do steps 1,2,4,5,6. Don’t do 3. See if you get to 7. … Read more
Try This: Set IEObject = GetObject( ,”InternetExplorer.Application” ) *Notice the comma before “InternetExplorer.Application” EDIT: Try this: Dim IE As SHDocVw.InternetExplorer Set IE = GetObject(,”InternetExplorer.Application”) You can also try this: Dim ShellApp Set ShellApp = CreateObject(“Shell.Application”) Dim ShellWindows Set ShellWindows = ShellApp.Windows() Dim i For i = 0 To ShellWindows.Count – 1 If InStr(ShellWindows.Item(i).FullName, “iexplore.exe”) <> … Read more
Using tlbimp.exe directly is not necessary. Try replacing any <COMReference> items in the project file with <COMFileReference>. An example would look like this: <ItemGroup> <COMFileReference Include=”MyComLibrary.dll”> <EmbedInteropTypes>True</EmbedInteropTypes> </COMFileReference> </ItemGroup> The COM dll doesn’t need to be registered on the machine for this to work. Each COMFileReference item can also have a WrapperTool attribute but the … Read more
When you are in a remote PowerShell session your logon session on this remote computer is flagged as a “network” logon (Logon Type: 3). For some obscure (security? sell SCCM?) reason, part of the Windows Update Agent COM APIs are restricted to only be usable by locally logged on Administrators. Using PsExec and Scheduled Tasks … Read more
Calling regasm without administrative rights for COM interop I think it should be possible to use RegistrationServices.RegisterAssembly and RegOverridePredefKey APIs together to implement automatic registration under the HKCU hive, in a UAC-friendly way. I’ve posted a more detailed answer here.
You must check the PE Header of these files. All DLL and executables, Win32 and .NET, have a PE header. An In-Depth Look into the Win32 Portable Executable File Format The .NET File Format Portable Executable
I found out from the CLR team themselves that indeed it is not safe — unless you allocate a GCHandle on the RCW while it’s still safe to do so (when you first acquire the RCW). This ensures that the GC and finalizer haven’t totaled the RCW before the managed object that needs to invoke … Read more