qrCodeMessage is not defined about blazor.qrcode

[MrYossu]

Ah, looked in the source files and found that the reference should have been...

<script src="_content/Blazor.QRCode/qrcode.min.js"></script>

That fixed the 404, but I still get the same error when it starts scanning.

[MrYossu]

OK, found the problem.

Your embedded JavaScript contains a mistake. The qrcode-init.js code contains the following...

    }, function (errorMessage) {
        DotNet.invokeMethodAsync('Blazor.QRCode', 'OnFailed',
            qrCodeMessage);

Note that the function parameter is named errorMessage but the body of the function assumes it's called qrCodeMessage.

If you fix that, then the error goes away.

However, when I try to scan, the ErrorCallBack C# method is called with the following message...

QR code parse error, error = TypeError: Cannot read properties of null (reading 'getContext')

At this point I got stuck. Any idea what is goingwrong?

[hamidrezahy]

hi, thank you for your time
The main drawback was the README.md file and the publish settings.
For better use, take a look at the added sample project