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June 2nd, 2004, 10:36 PM
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help needed on how to use COM in vb.net
Hi..
this is the first time i am trying to use a COM in vb.net
i have create a COM using VC++ (using the ATL COM AppWizard). i have include the class that i wanted to create an instance from vb.net.
The COM was successfully registered into the registry. I have also add a reference to that COM object in my vb.net project and it show appears in the References section of my solution explorer. However when i try to use the Object browser to view the contents of it, there was NOTHING!!!!.. I could not use the 'Imports ' statement to import that library.
What is the problem??? is there anything i need to declare or add when i am creating COM?
Would appreciate any help ....
Thks in advance..
iceman |
June 2nd, 2004, 11:33 PM
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Hi..
i have manage to find out the problem... i did not create any ATL object in the first place..
well i have manage to see something on that reference which i have add in in my vb.net however i could not see any of the memebers of my class which i have create under the object view..
What is the problem??? is there anything i need to declare or add when i am creating COM?
Would appreciate any help ....
Thks in advance..
iceman |
June 3rd, 2004, 09:55 AM
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I have avoided using COM with .NET so much I couldn't tell you where to start.
What I can tell you is that, if you can re-create it in .NET, you should. COM Interop is slow..
Hal Levy
Web Developer, PDI Inc.
NOT a Wiley/Wrox Employee
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June 7th, 2004, 09:30 PM
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ok ic..
thks for ur help...
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June 7th, 2004, 09:45 PM
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btw..
how to u recreate a class written in Visual C++ in .net???
is there any reference which i can look into???
Thks a lot..
iceman
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June 8th, 2004, 09:27 AM
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You can do C++.NET - Load the C++ source into the .NET and a wizard will start asking if you want to convert.. do the conversion and then you will have to debug - since the conversion isn't perfect.
Make sure you test, test, test!
Of course- you can use COM INTEROP, as I mentioned. You will just need to search google for COM INTEROP.
Hal Levy
Web Developer, PDI Inc.
NOT a Wiley/Wrox Employee
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June 8th, 2004, 09:09 PM
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ic.... thks...i will go try....
:)
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June 8th, 2004, 09:33 PM
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hi.
well i have try using .net to convert my vc++ class
btw mine vc++ class is using fstream and iostream....
seems like .net don't have it....,net no longer use that...the closet i find is filestream...
so this means i need to manually change to use filestream???
thks in advance..
iceman
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June 9th, 2004, 10:10 AM
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Sorry- your beyond me with this.. I don't use c++
Hal Levy
Web Developer, PDI Inc.
NOT a Wiley/Wrox Employee
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