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Migrating from VB6 to VB.Net

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  • 24-11-2006 1:11pm
    #1
    comer_97
    Closed Accounts Posts: 522 ✭✭✭


    Hi,

    I'm starting on a large migration project from vb6 to vb.net. The situation is that we can't completely replace the system with a .net system for operational reasons, so we have to do it piece by piece.

    Does anyone know or have experience or using forms created in VB.net in VB6?

    any help would be great!

    thanks


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    #2
    amen
    Registered Users Posts: 2,781 ✭✭✭amen


    I don't belive you can use forms created in VB.Net in vb6.


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    #3
    comer_97
    Closed Accounts Posts: 522 ✭✭✭comer_97


    i know there are runtime callable wrappers but i don't want to even go there.

    so is there any way to migrate a vb6 system piece by piece or does it all have to be done at once???


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    #4
    amen
    Registered Users Posts: 2,781 ✭✭✭amen


    ooh come to think of it you could prob put a Com+ wrapper around it and you would be able to call it from VB6.

    If I was doing this I would convert all the Non GUI stuff first and then
    convert all the GUI. I think you are going to have fun with some parts of the app in VB6 and some in VB.Net


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    #5
    comer_97
    Closed Accounts Posts: 522 ✭✭✭comer_97


    it can't be done any other way for operational reasons. the big bang approach is not an option. wrappers is the way to go!

    The system is really big so it will take a while!!!


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    #6
    Ginger
    Registered Users Posts: 2,931 ✭✭✭Ginger


    Ok

    You can use the VB.NET migration wizard to experiment with migrating your existing code to VB.NET

    Also you can implement a change on how you call your components to make them late binding rather than early binding which allows you to change you code without needing to reregister it each time in the project..

    If its a VB6 windows app with COM objects you can migrate the front end fairly ok and then use the above to help you eliminate the COM code as you change it.

    Its all COM+ you can add the COM into your project in the add references (COM+) tab


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    #7
    comer_97
    Closed Accounts Posts: 522 ✭✭✭comer_97


    it's over 300 forms so the migration wizard leaves me with thousands of issues that i would have to deal with.

    So basically what you are saying is that I can create com obecjts out of my current forms and call them from .net?


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