C# Tutorial - QR Code Scanner using Webcam in C# | FoxLearn

Creating QR Code Scanner, Read QR Code from Webcam, Camera in C# .NET Windows Forms Application using AForge.Video library
Website: foxlearn.com
The AForge.Video library contains interfaces and classes to access different video sources, such as IP video cameras (MJPEG streams). The library defines types used by other video related libraries from AForge.NET framework.
The AForge.Video.DirectShow library contains classes, which allow to access video sources using DirectShow interface (USB web cameras, capture devices, video files, etc.).
ZXing.Net is a port of ZXing, an open-source, multi-format 1D/2D barcode image processing library originally implemented in Java.
It has been ported by hand with a lot of optimizations and improvements.
It is compatible with .Net 2.0, .Net 3.5, .Net 4.0, .Net 4.5, .Net 4.6, .Net 4.7, .Net 4.8, Windows RT Class Library and Components, UWP, .Net Standard 1.0, 1.1, 1.3 and 2.0, Silverlight 4, Silverlight 5, Windows Phone 7.x and Windows Phone 8.x and Xamarin.Android.
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[@Larry821]

This has to be the most interesting little app I've ever seen presented in just 8 minutes. This is highly technical material condensed into a useful and practical proof-of-concept. Well done.

[@jorgeespinosa8480]

This is the most relaxing tutorial I have ever seen.

[@yevhenvictorovich2288]

It was really cool ! Thanks for your examples. Could you show one more example with car number detection ? I want to try create some app for the handicapped parking

[@foxlearn]

OK. Thank you for your suggestion. I'll upload soon !

[@Earthbound64]

Does not recognize FilterInfoCollection, perhaps some using is missing? What do you use to import zxing nuget package into the code?

[@ibo3460]

Take a few seconds after video ends and make screen black to show your other videos plz, every time when I try to pause at the end I click your other videos inadvertently. Thank you for great videos by the way)

[@foxlearn]

OK. Thank you for your suggestion. I'll try to do better

[@ibo3460]

@@foxlearn Thank you 🦊 Learn ))

[@markusgrabner8690]

Great tutorial. Thank you! Saved me a lot of time.

[@kanyako6021]

Thank you for this tutorial. I hope you make more tutorials like this. It helps me a lot.

[@foxlearn]

Thank you so much !

[@nihatbeyi]

Excellent application

[@feyyazaki1740]

woww it was so useful video for me.. thank you

[@foxlearn]

Thank you !

[@ahmedosama7463]

Was very helpful , saved me a lot of time , Thanks, Yet there is a mistake in Timer code that will cause null reference errors randomly, you must stop the time once Tick event happens , then re-enable it back before exiting the Tick event.

[@user-em5qm5bl9v]

problem in the statment cboDevice, this type was not declared, and you have in another video the same code but using cboCamera also not work? can explain that please?

[@deveshvagal3238]

Instead of QRCode I want to scan barcode using webcam what should I do ?

[@foxlearn]

OK. Thank you for your suggestion. I'll upload soon !

[@lerocher2182]

@@foxlearn or scan barcode with scanner. Thanks

[@gulammustufaansari8605]

Excellent bro❤❤❤❤❤

[@emmakade07]

This is a great work weldone. Please i am encountering a problem, when i reached timer1 if (pictureBox1.Image != null) { } i tried to type "BarcodeReader" but the keyword is not coming up, it gives error so i can't proceed, Please how do i solve the error?

[@ahmedosama7463]

What is the error? null reference ?

[@warrendewit7769]

Add reference to Zxing?

[@Justin-xy2ko]

bit late but heres the solution: at the start of the code you have to add "using ZXing;" For some reason the uploader doesn't show this

[@csaappspromo2546]

Great Video. Thank you very much

[@devamsol7879]

Dear sir thanks for this tutorial, but i have problem Argument 1: cannot convert from 'System.Drawing.Bitmap' to 'byte[]' , how to fix it. thankyou.

[@cansadodelserrucho]

I really love your videos

[@foxlearn]

Thank you !

[@fmusicede7384]

Thank you! so good!

[@victormwaba6688]

Hello I tried this but my picture box is loading blank but the camera light is going on what should I do?

[@user-rp9iis1en6h]

Can aforge library decode OMR sheet? or process OMR sheet from picture or scanned file?

[@EmirFaruk]

thanks for the video nice and clear

[@kaimost9774]

The camera does not display Where should it be fixed?

[@jameelurrehman8587]

خوب

[@foxlearn]

Thank you !

[@dilawarali5390]

Hello! thanks for making this great video but can you tell me how did you get the qrcode into your mobile did you capture the picture of qrcode or did you use any app for it?

[@kashwells3726]

I guess Im kinda randomly asking but does anyone know a good place to watch new series online ?

[@axelderek4958]

@Kash Wells Try Flixzone. You can find it by googling =)

[@randyelliott2494]

@Axel Derek Yea, have been watching on FlixZone for years myself =)

[@kashwells3726]

@Axel Derek Thanks, I went there and it seems like they got a lot of movies there =) I appreciate it!

[@axelderek4958]

@Kash Wells happy to help =)

[@kamranmmmdov55]

Thanks a lot.Your lessons is so interesting. Please make video about Bot framework

[@foxlearn]

OK. Thank you for your suggestion. Let me try to research. What do you want to use botframework for?

[@kamranmmmdov55]

for my personal web site.i want to create Chatbot for support customers(ASP.NET)

[@solomod5787]

Failed to install Zxing it says "'ZXing.Net' already has a dependency defined for 'NETStandard.Library'." so what will be the solution for it?

[@deepudurairaj352]

1.Open package manager console in Visual Studio 2.Type: [Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bOR [Net.SecurityProtocolType]::Tls12 Then try installing

[@th3painter975]

Hi thank for your video How can i add new frame event When i press tap give me error massage Event hookup could not create solution with event handler

[@ferdicuyar814]

Does not working on me. I take the images from camera but i dont get any result to rich textbox when i put the qrcode. i find out that when i creating the "Result" variable my reader.decode is not working and result variable becomes null.

[@ferdicuyar814]

private void timer1_Tick(object sender, EventArgs e) { BarcodeReader okuyucu = new BarcodeReader(); if (pictureBox1.Image!=null) { Result sonuc = okuyucu.Decode((Bitmap)pictureBox1.Image); string decoder = sonuc.ToString().Trim(); if (decoder != "") { timer1.Stop(); txtSonuc.Text = decoder; } } } Result sonuc returns null and program crushes but picturebox1. image is not null. do u have any idea?

[@madraven37]

I'm just curious, I've seen some mobile apps, showing "grid guides" when scanning a qr code, can It be done here as well??

[@ahmedosama7463]

Yes , quite straight forward stackoverflow.com/questions/49256697/qr-code-scanning-inside-a-limit-area

[@manhbuivan7772]

Excuse me, I cant find " Decode ".please tell me Why?

[@user-yo7mw6oj4p]

Спасибо. ))) Очень классный урок)))

[@foxlearn]

Thank you !

[@xiaocheng9057]

hello Fox Learn... thank you for uploading this video. It save me from failing and repeating ^^ but the problem is when it captures it doesn't freeze the photo.... dunno why but over all... It save from death haha^^

[@iamnut8339]

Will there be a fingerprint scanner video soon?

[@deveshvagal3238]

If we create a QR code in a picture box & print the QRcode on the crystal reports & then scan it with the webcam will it scan ?

[@foxlearn]

Yes, No problem

[@alm0nd.359]

Several times, unable to install ZXing.net: problem of references ?????????

[@foxlearn]

Please try to change your dotnet framework to 4.5 or 4.7

[@jaimedomingoalopez1537]

download from zxing and add the download to a folder to your sources. then add again using nuget

[@yapandasoftware]

Really cool!

[@foxlearn]

Thank you !

[@tutoletras2400]

Hoy would You Made this un WPF?

[@1ryqw989]

how you can download that in visual studio?????

[@akhterhussain100]

Thanks for sharing,but how to generate QR code

[@foxlearn]

You can view this video kzbin.info/www/bejne/aWPYaJ6YbqmMe80

[@quioan6978]

Excuse me, why i have not BarcodeReader, Result ?

[@manhtunghoang8370]

using XZing;

[@A.Developer]

nice🤩

[@VivekKumar-xe9cv]

[nuget.org] The V2 feed at 'www.nuget.org/Search()?$filter=IsLatestVersion&searchTerm='aforge'&targetFramework='net472'&includePrerelease=false&$skip=0&$top=26&semVerLevel=2.0.0' returned an unexpected status code '404 Not Found'... i am getting this error when I am trying to install package of "aforge"

[@foxlearn]

What visual studio version are you using?

[@VivekKumar-xe9cv]

@@foxlearnvs 2019

[@VivekKumar-xe9cv]

@@foxlearn version 16.8.0

[@pradeepyadav2318]

dear sir i have applied this code in my code and project is running but QR code not scanning..plz let me know what i doing mistake..

[@foxlearn]

I think you should zoom qr code, please try again

[@aramayisgyulbekyan5436]

Very helpful , Thanks . Why is my camera have angle . in skype everything is ok

[@foxlearn]

Thank you !

[@user-pz5nx1wd6d]

OHHHHHHH，Thanks for your tutorial.

[@foxlearn]

You're welcome. Thank you !

[@jerrymanguiat8074]

It can be use for multi qr codes?

[@foxlearn]

I think it can

[@johnmarkdelacruz5818]

nice one

[@prof.josimarr]

i have a error on closing form, but I use try catch ( in portugueses this is called : gambiarra) lol

[@luissilvano154]

Será que você pode me ajudar? não estou conseguindo rodar o código. Meu whats: 11979891306

[@hasan7106]

thanks ♥

[@programmer313]

Exteintion show on index =0 when I try to run project they say out of indexing Some one help please?

[@programmer313]

If someone get same exception The reason is the camera driver isnt in laptop 🙂 I mean the problem is techniques in device driver not in code

[@satishmajji481]

Could you please make videos on Microsoft azure?

[@foxlearn]

OK. Thank you for your suggestion

[@huseyinhilmicelebi1364]

all same but dont see BarcodeReader class , help me please

[@stefanrompen5330]

Same

[@foxlearn]

Please install library from the nuget

[@huseyinhilmicelebi1364]

@@foxlearn problem solved, thank you , but again there is a problem , my camera dont start, "captureDevice" object dont start camera

[@manhtunghoang8370]

@@huseyinhilmicelebi1364 did you fix it ?

[@mohammadmo4545]

@@manhtunghoang8370 did you fix it?

[@sidriz1]

How can i add BarCodeReader

[@foxlearn]

You can do the same way

[@umairanjum4123]

nice'

[@foxlearn]

Thank you !

[@buildcon_]

👌

[@foxlearn]

Thank you !

[@mohnasser8229]

Please can you make a video a bout how do I crack crack for my application or serial?

[@foxlearn]

OK. Thank you for your suggestion !

[@shubhamsahuSD]

😘

[@foxlearn]

Thank you !

[@belaidamar1138]

Hello, thank you for your videos can you help me write a code in c # to send emails from my application to mailboxes hosted in microsoft EXCHANG servers

[@davidcor6466]

df

[@kamilkostrzewski1831]

Very useful tutorial, thanks. But did you know that people who using light themes in IDE has a special place in hell? Im worried about you

[@martinmendez695]

Using a light theme for education purposes should not be a concern