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How to convert VB6 vbp file to a modern compiler

Darcy Hourd 0 Reputation points
2025-12-01T23:07:44.8133333+00:00

I have a VB6 application that needs to be upgraded to a newer version of VB, what is available to make the conversion?

Developer technologies | VB
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  1. Susmitha T (INFOSYS LIMITED) 2,695 Reputation points Microsoft External Staff
    2025-12-02T08:30:46.5566667+00:00

    Thanks for reaching out!

    To convert a VB6 (.vbp) project to a modern complier, there is no automatic one-click converter. The supported path is:

     Migrate from VB6 -> VB.NET:

    1. Use the Visual Studio Upgrade Wizard (built into older versions of visual studio).
    2. It can import a .vpb file and convert forms, modules, and code.

    Note: It's only a starting point - manual fixes will still be required.

     

    Steps to convert:

    1. Open the VB6 project in VB6 first and make sure it complies without errors.
    2. Install Visual studio 2008/2010/2012 (only these versions include the upgrade Wizard).
    3. Open visual studio ->File ->Open ->Project ->select your .vbp file.
    4. The upgrade wizard will start automatically.
    5. Click Next ->Next -> Finish to run the conversion.
    6. Visual studio generated an Upgrade report showing what was converted and what needs manual fixing.
    7. Fix the remaining errors (Unsupported VB6 controls, old API calls, database code, etc.).
    8. Run and test the converted VB.NET Project.

    Reference: https://learn.microsoft.com/en-us/previous-versions/visualstudio/visual-basic-6/visual-basic-6-support-policy

     

    Let me know if you need any further help with this. I will be happy to assist.
    If you find this helpful, Kindly mark the provided solution as "Accept Answer", so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

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  2. AI answer

    2025-12-01T23:07:53.13+00:00

    To convert a VB6 application to a modern version of Visual Basic, you can utilize the Transaction Integrator Conversion Tool. This tool assists in converting old type libraries to .NET assemblies and can help with the migration of Visual Basic 6.0 Automation data types to their corresponding Visual Basic .NET types. Here are some key points regarding the conversion process:

    1. Data Type Conversion: The tool converts various VB6 data types to .NET types (e.g., Integer to Short, Long to Integer, etc.).
    2. Handling Functions: The NewRecordset function is not supported in .NET, so you will need to modify any client applications that utilize this function.
    3. Recompilation: Existing COM Clients that use declarative binding must be recompiled due to GUID changes.
    4. Import Feature: If your application uses persistence connections or requires features that rely on the new model, you will need to use the Import feature in Designer to convert the TLB or .NET assembly.

    For more detailed guidance, you may refer to the resources provided by Microsoft regarding the conversion process and the tools available for upgrading your VB6 applications.

    References:

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