Dynamsoft Developer Blog

Mobile document scanning apps bring convenience to users by allowing them to scan travel documents, ID cards, passports and other types of documents on the go. This article aims to help C# developers, who do not have the background in computer vision, to build a mobile document scanning app for...

This article aims to help C# developers to build desktop .NET MRZ (Machine Readable Zone) scanner applications with Dynamsoft C++ Label Recognizer SDK. We firstly build a .NET class library for detecting MRZ zone and extracting MRZ text from passport, ID card, and travel documents. Then we demonstrate how to...

Suppose you are a C# developer who wants to use Dynamsoft Document Normalizer to implement a desktop document scanner application. Since Dynamsoft Document Normalizer is a C/C++ library, you may encounter some interoperability issues when using it in your C# project. In this article, we will help you build a...

Previously, we created a Xamarin.Forms Barcode QR code scanner for Android and iOS. Xamarin.Forms is not the end for developing cross-platform mobile apps in C#, because .NET MAUI is on the way. Microsoft mentions that .NET MAUI is the evolution of Xamarin.Forms, and it supports both mobile and desktop development....

If you try to port Xamarin mobile projects to .NET MAUI, you will find there is no problem with packages built for Xamarin Android, but packages built for Xamarin iOS are incompatible. To tackle this issue, you need to change target framework to .NET 6 and rebuild related packages. Dynamsoft...

Xamarin.Forms lets .NET developers create cross-platform mobile apps for Android and iOS in C#. This article demonstrates how to scan barcode and QR code from image file and live video stream using Xamarin.Forms Custom Renderers and Dynamsoft Barcode Reader SDK. In the end of this article, we will also demonstrate...

Dynamsoft Barcode Reader, as an enterprise-class barcode and QR code SDK, supports many platforms (Windows, Linux, macOS, Android, iOS, Raspberry Pi OS, and Web) and programming languages (Python, Java, Swift, C#, Cpp, and JavaScript). There are many sample projects distributed in Dynamsoft GitHub repositories and official website. To help developers...

A few weeks ago, I released a .NET 6 BarcodeQRCodeSDK package implemented with Dynamsoft C/C++ Barcode SDK. This article demonstrates how to build a Windows desktop barcode and QR code scanner using .NET WinForms, OpenCvSharp, and BarcodeQRCodeSDK. This article is Part 4 in a 4-Part Series. Part 1 - How...

.NET MAUI is a cross-platform framework that allows developers to create desktop and mobile applications from a single codebase with C#. It is currently in preview and the production release is slated for Q2 2022. This article goes through the steps to build a .NET MAUI barcode and QR code...

On mobile platforms, HTML5 is not only supported by web browsers, such as Chrome, Edge, Safari, Firefox, and Opera, but also web view UI component that used for building native apps. Therefore, even though you are only familiar with web development, you can easily create excellent mobile apps for Android...

Since .NET 6 Preview 3, it is possible to host Blazor web applications in a WinForms/WPF app using the BlazorWebView control. Behind BlazorWebView is WebView2, which uses Microsoft Edge as the rendering engine to display the web content in native apps. Developers can now adopt a hybrid app approach, utilizing...

Microsoft is pushing .NET technologies to the next level. It is no doubt that .NET framework will be retired in the near future. This article aims to help C# developers to create Windows desktop barcode and QR code reader application using Dynamsoft Barcode Reader SDK. We will firstly create a...

Microsoft .NET 6 SDK empowers C# developers to build cross-platform DotNet applications for Windows, Linux, and macOS from one codebase. This article describes the steps to build a .NET 6 barcode and QR code decoding library based on Dynamsoft C/C++ Barcode SDK, as well as how to pack the library...

ASP.NET Core enables C# application to run on *nix operating systems. In this tutorial, we are going to play with ASP.NET Core and Dynamic Web TWAIN SDK to build a DotNet Core document scanning application for Windows, Linux, and macOS. What You Should Know Preparation First and foremost, we should...

Blazor is a web framework developed by Microsoft. It enables developers to create web apps using C# and HTML. However, calling existing JavaScript API is inevitable while developing a Blazor project. This article will help web developers who want to build web barcode and QR code reader apps using Blazor...

In Dynamsoft Barcode Reader SDK, there is a fancy webcam barcode sample called BarcodeReaderDemo that supports reading barcodes from disk files, TWAIN-compatible hardware scanners, and USB webcams. However, one thing you have to know is the functionality of acquiring images from peripheral devices relies on Dynamic .NET TWAIN, which is...

Mono is an open source implementation of Microsoft’s .NET Framework. It aims to help C# developers create cross-platform .NET applications. Although .NET Core is born for multiple platforms (Windows, Linux, and macOS), it is so far not a substitution of .NET framework. If you have an existing project written in .NET framework and want to...

This article shows how to use Dynamsoft C++ barcode reader SDK to create a Window runtime component, as well as how to use the WinRT component and JavaScript to build a UWP app on Windows 10. Prerequisites Dynamsoft Barcode Reader SDK 6.4 Visual Studio 2017 Building WinRT Component with C++ DLLs...

This tutorial aims to help .NET developers use Dynamic .NET TWAIN in Unity projects. Download Unity Dynamic .NET TWAIN Unity Infinite Loading Issue It’s weird when running the Unity editor first time, I got stuck on the loading screen. If you suffer from the issue, remove %USERPROFILE%\AppData\Roaming\Unity, %USERPROFILE%\AppData\Local\Unity, and %USERPROFILE%\AppData\LocalLow\Unity, and...

ZXing is probably the most popular open source barcode SDK in the world. The library is written in Java and now has been ported to C++, .NET, Python, Objective-C, PHP and some other programming languages. Because ZXing is free, many developers would like to build barcode scanning apps with it....

When you release a JavaScript library, such as jQuery, online, you may need to collect some status information for analytics. If you deploy your website on IIS, you can use HTTP Module to capture HTTP requests of HTML, JS and CSS files. My goal is to make a statistic of...

OpenCV is written in C++.  If you install OpenCV library on Windows, you will see OpenCV officially provides wrappers for Python and Java but not for C#. Fortunately, there are many .NET open source projects for wrapping OpenCV C++ APIs, and thus we don’t need to write a wrapper from...

Previously I shared how to use Touchless, which wraps the win32 APIs of DirectShow, to control webcam in C#. In this article, let’s take a further step to see how to use the more complicated DirectShow.NET APIs to capture the video stream and read barcode from preview frames on Windows. Resources for Learning DirectShow.NET DirectShow.NET...

When building a .NET application to read barcodes on Windows via camera, you need two types of SDKs - one for webcam, and the other for barcodes. In this post, I want to share how to use .Net webcam and barcode SDKs to create a simple WinForm barcode reader application...

If you have a USB camera, how can you build a simple C# camera application on Windows 10? There are three options:  WIA (Windows Imaging Acquisition), DirectShow and MediaCapture. After trying some sample code that downloaded from CodeProject and GitHub, I got the conclusion: 1. WIA is not good because...

Probably many Windows developers have upgraded operating systems to Windows 10. On Windows 10, Microsoft suggests developers create Universal Windows Apps (UWP) for a variety of devices, including PC, tablet, mobile phone, Hololens and so on. For development, I wonder whether legacy C/C++ SDKs can also seamlessly work on Windows...

If you have a TWAIN-compliant scanner, you can easily control it with Dynamic Web TWAIN or Dynamic .NET TWAIN. Both SDKs can help you create some excellent applications for document scanning and management on PCs. However, have you ever complained that it’s so inconvenient to stay with your scanners and...

Dynamic .NET TWAIN is one of the excellent TWAIN-compliant SDKs for document scanning and image capture. In this tutorial, I would like to share how to create a bridge to convert .NET TWAIN C# methods to Java methods in order to help Java developers easily implement Java TWAIN scanner software....

HTML5 WebSocket facilitates the communication between web browsers and local/remote servers. If you want to learn a simple websocket example, creating a WebSocket Server in C## and a Web client in JavaScript, you can refer to SuperWebSocket, which is a .NET implementation of Web Socket Server. In this article, I...

If you ever developed some iOS or Android apps, you should know that for localization, the strings should be stored in some resource files and dynamically loaded in apps. What about Windows applications? When I tried to store strings in a resource file in Visual Studio, I met some problems...

Dynamic .NET TWAIN 5.0 has been released for a while. To help users to quickly grasp APIs, a brand-new API demo, written in WPF with C# & VB.NET, is included. In this tutorial, we would like to show the anatomy of this application. Let’s glance at the screenshot as a...

Yesterday, my colleague told me that there was a weird issue that existed in our WPF sample code for Dynamic .NET TWAIN. What we wanted to implement was to create two projects, and start one application from another. The problem was, when we started the invoked application independently, it worked...

In today’s “big data era”, more and more organizations are using an enterprise content management (ECM) or record management system (RMS) to help maintain and manage the documents. Digitizing documents and storing them in a central database has become an important part of many organization’s document management workflow. For this...

Control web cameras from browsers with Dynamic Webcam API Introduction to the Webcam Library Dynamic Webcam SDK is a browser plugin which enables users to acquire images from a webcam, edit and then upload/save them to a database, web server or local disk. Also, it can capture a live video stream into...