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Thread: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

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  1. #1

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    Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Almost all libraries that read QR codes via webcam use net 4.5 or higher. I want to find a QR code reader library with net version 4.0 ?

  2. #2
    .NUT jmcilhinney's Avatar
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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Do any of the ones you have found provide source code that you could recompile under .NET 4.0, possibly making changes if required?

  3. #3

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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    I have few examples of this but those libraries must use net 4.5 or higher like:
    AForge.dll
    AForge.Video.DirectShow.dll
    AForge.Video.dll
    DarrenLee.Media.dll
    zxing.dll
    zxing.presentation.dll

    Besides the above company, is there any other company that has the above features such as support for net 4.0 library ?
    Last edited by dong; Jun 25th, 2021 at 03:46 AM.

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    Frenzied Member PlausiblyDamp's Avatar
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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    https://www.nuget.org/packages/BarCode/ - claims to only require 4.0

    https://github.com/codebude/QRCoder/ - OSS so might be able to recompile if it needs 4.5 or higher

  5. #5
    .NUT jmcilhinney's Avatar
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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Quote Originally Posted by dong View Post
    I have few examples of this but those libraries must use net 4.5 or higher like:
    AForge.dll
    AForge.Video.DirectShow.dll
    AForge.Video.dll
    DarrenLee.Media.dll
    zxing.dll
    zxing.presentation.dll

    Besides the above company, is there any other company that has the above features such as support for net 4.0 library ?
    Thanks for not answering the question that I actually asked.

  6. #6

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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Quote Originally Posted by jmcilhinney View Post
    Thanks for not answering the question that I actually asked.
    I have not understood your question. I want to find a net 4.0 library that supports webcams to read QR codes, so that I can use it for computers with weak configurations. You want to ask me anything ?

  7. #7
    .NUT jmcilhinney's Avatar
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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Quote Originally Posted by dong View Post
    You want to ask me anything ?
    I already did, but you chose not to answer it. You implied that you had already found some libraries that targeted .NET 4.5 or above. I asked whether any of those libraries came with source code that you could recompile against .NET 4.0, with appropriate modifications if required. What's not to understand?

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    Re: Is there a *.dll net 4.0 library that reads QR codes for webcams in C# ?

    Quote Originally Posted by jmcilhinney View Post
    I already did, but you chose not to answer it. You implied that you had already found some libraries that targeted .NET 4.5 or above. I asked whether any of those libraries came with source code that you could recompile against .NET 4.0, with appropriate modifications if required. What's not to understand?
    The libraries I found do not support webcam net 4.0, some of the links all you put up I tested do not support webcams, those links read image files that do not support webcam

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