I need to call a VB.NET DLL in VB6 application, does anybody have any ideas?
How to call a Visual Basic .NET or Visual Basic 2005 assembly from Visual Basic 6.0
Using .NET DLL in VB6
You can also export functions as standard windows DLL function entry points if you're willing to use a post compile tool
Check out
http://www.codeproject.com/KB/dotnet/DllExport.aspx
Works a treat and lets you integrate with all sorts of apps using Native VB.net when it'd require C or asm otherwise.
Related
I have developed a VB6 application with Microsoft Visual Basic 6.0 Enterprise Edition SP6.
I have copied the executable file to a computer C where VB6 is not installed.
I have installed on computer C the VB6 SP6 run-time redistribution pack available on this page : http://www.microsoft.com/fr-fr/download/details.aspx?id=24417
The following error message is displayed when I launch my application from computer C : The language DLL 'VB6FR.DLL' could not be found.
Why the VB6 SP6 run-time redistribution pack does not contain VB6FR.DLL ?
What pack contains VB6FR.DLL ?
Any help will be greatly appreciated.
You might have a better chance with the English/US version:
https://www.microsoft.com/en-us/download/details.aspx?id=24417
But to be clear, you cannot just copy VB6 from one system to another and expect the IDE itself to work fine, which is what I think you might be trying to do. Your best bet is to find the original CD and re-install it on the new system, or consider switching to VB.NET, which I honestly would personally avoid if it's a big project.
I want to open a program (written in Visual basic 6) to be open in Visual Studio.net. Please guide, how could I do that?
While trying to open VB6 (.vbp file) program directly from the OPEN project option in visual studion.net, I was getting this error,
"Visual Basic 6 (.vbp) files cannot be opened in Visual Studio"
I am trying to open in VS 2010.
Visual Studio 2010 does not support VB6 projects. See the link here
From the msdn documentation:
Visual Studio 2010 does not provide tools for upgrading applications and projects from Visual Basic 6.0. If you want to upgrade your project from Visual Basic 6.0 to Visual Basic 2010, you can use the upgrade tools provided with earlier versions of Visual Studio and then upgrade the project again in Visual Studio 2010.
Visual Basic Tools for Visual Studio
There's a plugin called Visual Basic Tools for Visual Studio that provides the following features:
load classic VB workspace- and project-files and offers quick access to the extension´s options
integrates with the solution explorer and the code editor having support for syntax highlighting, basic outlining (allows to expand/collapse methods, properties and types) as well as navigation bar support.
Classes, Types, Modules, Forms and Controls can be inspected using the Object Browser and Class View.
From the reading, it's unclear if you can actually build the project, though it does say:
The import tool creates a new solution and MSBuild compatible projects.
Links to the plugin by VS Version
2012-2013
2015
2017
RAD Basic
There is also an independent IDE called RAD Basic that claims the following features:
New and modern IDE (Integrated Development Environment) with form designer supporting drag and drop, code completion, refactoring tools, etc.
RAD Basic Compiler: Compiler 100% compatible with your VB6 project (vbp, frm, bas and cls files). Generate native executables (exe and ocx) in both 32-bit and 64-bit.
RAD Basic Forms: Reimplementation of common VB6 controls and components supporting 32-bit and 64-bit.
etc.
Speaking from my experience, it's not easy to open a Visual Basic 6.0 project in any versions of Visual Studio above 2008.
Although 2008 and below versions do provide an automatic function to convert Vb6 code to the VB.net framework. But, the problem starts after the conversion - it can skip some code, add functions/variables on its own, or modify the functional behavior on its own, and with that the VB.proj will be created with errors and you will not be able to open it anywhere as a solution file. The same with any 3rd party tools.
If you want to open the VB6 code try Visual Basic 6.0 Portable edition.
But headache will still follow you there, please refer this link
Installation of VB6 on Windows 7 / 8 / 10
Make sure you are clicking on the project file itself... Right click on the file and select "Open With" and select your visual studio program. It may need to be converted and if so, it will prompt you to convert the project.
Thanks!
Download Visual Basic Tools for Visual Studio,allows to work with classic VB workspaces and projects
My VB.NET application uses Microsoft Flex Grid Control 6.0. This is a legacy application which has been ported from VB6 with the Visual Studio conversion wizard. Although I can compile the assembly, I get a COMException because some class is not registered. I've found out that this class is the Microsoft Flex Grid Control 6.0.
Where can I find the control and how can I register it on machines so that the application will run?
Best Regards,
Oliver Hanappi
The "Microsoft FlexGrid Control" MSFlxGrd.ocx shipped with Visual Basic 6. It is an ActiveX control. The easiest way to get the control is to install Visual Basic 6. If you have an MSDN subscription, VB6 is available as a free download. But I am surprised you can compile your application if the control is not already installed on your development machine.
Once you have found the control, you need to register it on the machines where you need your program to run. The easiest way is just to create a deployment project. If you want to do it manually, use regsvr32 from the command line.
I have a DLL written in VB 6 and another DLL written in Visual Studio 2005 (VB.NET).
Now I want to invoke the method of the VB DLL from my .NET DLL. What should I do for this?
Any thoughts?
As VB6 creates COM DLLs, Visual Studio should have no problems generating an interop stub for you. Simply add a reference to the VB6 DLL from your .NET project by selecting Add Reference in Visual Studio and finding your DLL under the COM tab. Make sure the VB6 DLL is registered on your machine before you do this.
I have to continue to support VB6 applications. I've got both VB6 (Visual Studio 6) installed and Visual Studio 2008 as well. Can I read and write to VB6 projects while in Visual Studio 2008? Will it damage or destroy my VB6 application? It would be very cool if I could free up a lot of space and get rid of Visual Studio 6.
Visual Studio 2008 can't compile VB6 applications. You could use it as a text editor only (though it will offer you the VB.NET IntelliSense, not VB6). However, you need Visual Studio 6 to be able to build your application.
The VB6 IDE will coexist along side the Visual Studio 2008 quite happily.
The VB.NET LANGUAGE is related but not compatible with VB6. Conversion between VB6 and VB.NET is problematic. There are a lot of subtle and gross differences between the two making them effectively separate languages.
You need to keep both separate IDES and libraries installed on your computer in order to deal with both languages.
If you need for the two interoperate you can do this by creating COM libraries. Both languages can consume COM Libraries created in the other.
If you remove VB6 you won't be able to build your VB6 apps? VS2002/3/5/8 doesn't know how to compile VB6 projects.