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Program is able to run perfectly fine, but when trying to edit the form you get:
Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG))Now the RBarcodex.ocx in question is registered to the system since the program is able to run in "run time" and run once is compiled.
A set of .NET Framework managed libraries for developing graphical user interfaces.
Have other computers that can compile perfectly fine.
The bitness of an .ocx control must match the bitness of the process into which it is being loaded. Since VS2022 is now a 64-bit process a 32-bit .ocx will not be loaded by the designer. Similarly, previous versions of VS were 32-bit processes and were incapable of loading a 64-bit COM component in their designers.
So how should i go about fixing this issue ?
So how should i go about fixing this issue ?
I haven't tried this myself but maybe it will help -- WinForms Designer Selection for 32-bit .NET Framework Projects
I am not getting this error code.
The only ones that i am getting are the ones above
If you cannot get the out of process designer feature working perhaps you can build a 64-bit version of COM component ( assuming you are the author ). The other alternative is to use your project with a 32-bit version of Visual Studio for design work.
I used VS2019 to create a 32-bit .ocx control (MFCActiveX). I added the control to a .Net Framework Winforms project using VS2019. The I copied the Winforms project and the 32-bit .ocx control to a different VM that has VS2022 17.9 installed.
I registered the 32-bit .ocx control with regsvr32.exe and using notepad added the following line to the Winforms project properties.
<UseWinFormsOutOfProcDesigner>True</UseWinFormsOutOfProcDesigner>
This project property was discussed in the .Net blog article WinForms Designer Selection for 32-bit .NET Framework Projects. I added this to the .csproj for the Winforms project BEFORE I opened it in VS2022.
The project opened and the out-of-process designer loaded my test form with the 32-bit .ocx on it.
And the same solution works just as well in a VB .Net Framework Winforms project --
unfortunately, I cant upgrade this to 64 bit since I have some systems that this program needs to work on need to be 32 bit, so for now will just have to revert to VS 2019 to resolve the issue.
What about the out-of-process designer solution shown above? In any event, has your question been answered?