Dynamic .NET TWAIN V8.0

How to Use Dynamic .NET TWAIN v8.0 for Scanner and Webcam Software Development

Dynamic .NET TWAIN is a .NET document imaging SDK based on the TWAIN and DirectShow standards. It provides rich APIs for scanner and webcam software development. In this article, we will show you how to use Dynamic .NET TWAIN v8.0 to create a simple scanning and webcam application in Visual Studio.

Download and Install Dynamic .NET TWAIN v8.0

To use Dynamic .NET TWAIN v8.0, you need to download and install it from the download site. You can get a 30-day free trial license from here.

Create a New .NET Project

Launch Visual Studio, and create a new .NET project. You can choose either WinForms or WPF as the project type, as Dynamic .NET TWAIN supports both. For this example, we will use WinForms.

Add Reference to DynamicDotNetTWAIN.dll

Right-click References in the Solution Explorer, and select Add Reference. Browse to the installation folder of Dynamic .NET TWAIN, and select DynamicDotNetTWAIN.dll. This is the main assembly of the SDK that contains all the classes and methods you need.

Drag and Drop DynamicDotNetTwain Control to the Form

Open the Toolbox panel, and find the DynamicDotNetTwain control under Dynamsoft Components. Drag and drop it to the form. This control is the core component of the SDK that provides the scanning and webcam functionality.

Add Buttons for Scanning and Webcam

Add two buttons to the form, one for scanning and one for webcam. Double-click each button to generate the click event handler.

Write Code for Scanning

In the scanning button click event handler, write the following code:

```csharp

// Select a scanner from the installed devices

dynamicDotNetTwain.SelectSource();

// Open the scanner

dynamicDotNetTwain.OpenSource();

// Set the scan resolution to 300 dpi

dynamicDotNetTwain.Resolution = 300;

// Set the scan mode to color

dynamicDotNetTwain.PixelType = Dynamsoft.DotNet.TWAIN.Enums.TWICapPixelType.TWPT_RGB;

// Acquire images from the scanner

dynamicDotNetTwain.AcquireImage();

```

This code will prompt the user to select a scanner from the installed devices, open it, set some scan parameters, and acquire images from it. The scanned images will be displayed in the DynamicDotNetTwain control.

Write Code for Webcam

In the webcam button click event handler, write the following code:

```csharp

// Select a webcam from the installed devices

dynamicDotNetTwain.SelectSourceByIndex(dynamicDotNetTwain.SourceCount);

// Open the webcam

dynamicDotNetTwain.OpenSource();

// Start video capture

dynamicDotNetTwain.IfShowUI = true;

dynamicDotNetTwain.StartVideoCapture();

```

This code will select a webcam from the installed devices, open it, and start video capture. The webcam video will be displayed in a pop-up window.

Run and Test the Application

Now you can run and test your application. You should be able to scan images from your scanner and capture video from your webcam using Dynamic .NET TWAIN v8.0.

More Features of Dynamic .NET TWAIN v8.0

Dynamic .NET TWAIN v8.0 offers many more features for scanner and webcam software development, such as:

Customizable image scanning and loading process

Compatible with TWAIN Specification 2.1,and backwards compatible with earlier specifications

Save and upload images to a local disk, FTP site, web server or database

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