QrCodes | Powershell Module to create QRCodes | QRCode Processing library

I am new to React-Native & created a QR Scanner App. After scanning want to open url onClick/onPress.

-- Here is the code

onSuccess = (e) => { setResult(e.data) setScan(false) }

// Start scanner startScan = () => { setScan(true) setResult() }

I'm trying to develop a Web API project with ASP.NET Core 6, but I get this error, there seems to be an error in the dependency injection, but I haven't found this:

System.InvalidOperationException: Unable to resolve service for type 'api.Interface.IUsersService' while attempting to activate 'api.Controllers.UsersController'.

at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy, Boolean isDefaultParameterRequired)
at lambda_method3(Closure , IServiceProvider , Object[] )
at Microsoft.AspNetCore.Mvc.Controllers.ControllerActivatorProvider.<>c__DisplayClass7_0.b__0(ControllerContext controllerContext)
at Microsoft.AspNetCore.Mvc.Controllers.ControllerFactoryProvider.<>c__DisplayClass6_0.g__CreateController|0(ControllerContext controllerContext) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync() --- End of stack trace from previous location --- at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope) at Microsoft.AspNetCore.Routing.EndpointMiddleware.g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger) at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context) at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext) at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Startup.cs :

I'm building a method on my Controller to generate an SVG QR Code (QRCoder) and I'm trying to inline the resultant SVG from the controller into the View using a Method on the Controller.

When I attempt to view the method directly, I see the SVG XML coming back successfully, but it's getting an exception. I'm not quite sure what I need to make my controller return so that I can do this in my view.

I have been developing a kivy application with pyzbar to run on an Android that needs to read barcodes and QRcodes. The application read both barcodes and QRcodes running on my pc, but fails to read QRcodes while using the .apk built with buildozer, while still managing to read barcodes efficiently.

I thought (as it works on pc) that the problem was in dependencies in the .spec file while building to the apk.

Buildozer.spec requirements:

I'm building a QRCode system using this library https://github.com/tecnickcom/tc-lib-barcode. It's working great, but for some odd reason it's only outputting the last result of the $row["url_link"] in the loop. Let me explain.

I have 3 results inside the "qr_codes" table in the following column url_link results (see below)

https://google.com
https://yahoo.com
https://bing.com

It will generate all 3 QRCodes to the browser window but they are all the same QRCodes url links. All 3 QRCodes are https://bing.com

What am I doing wrong here? Any help would be much appreciated

Here is my code:

I'm using html2pdf to convert a html page to PDF file and download it. Everything is working fine in term of conversion and the PDF file is downloaded successfully, but when clicking on a button to generate the file a weird behavior is happening, the UI changes for a seconde ( colors, size and text font of the elements changes as shown in the attached captions )

html2pdf script :

I am now using react-native-qrcode-scanner to read the QRcode but now have trouble when trying to add the text inside of the camera view. (Not top or bottom of the camera view but inside of it - more exactly under the marker position with align center)

The text is not displayed even though I add Text field with position: 'absolute'

I have been using ZXing.Net to create barcodes and QRcodes for several years. However, it depends on (more accurately, my implementation of the actual rendering to a BMP depends on) System.Drawing.Common which as of .NET 6.0 is only compatible with windows. As such I can no longer use this library in my .NET 6.0 app when it is hosted in a Docker Linux container.

I have tried to create an image from the ZXing PixelData using Microsoft.Maui.Graphics but have had no luck - the lack of Microsoft.Maui.Graphics documentation at this point doesn't help.

Any ideas on how to create bar codes and QR codes in .NET 6 with using System.Drawing.Common?