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Leadtools.Twain Getting Started

Summary

For pointers to sample programs that demonstrate many features, see the table below:

.NET

.NET Framework

.NET

Redistributables Paths

Path	Target Platform
<installdir>\Bin\net	.NET 6+

Assembly - Class/Namespace	Comments
Leadtools.Twain.DLL - Leadtools.Twain	The Leadtools.Twain namespace provides support for TWAIN scanning functionality.

Dependencies

Library	Description	Dependencies
Leadtools.Windows.Media.TransitionBase.dll	Core Library	Leadtools.dll


NuGet Package	Description
Leadtools.Twain	Enhanced TWAIN Library

Sample Programs

Demo Name Source Code Path Pre-Compiled Executable Path Description

Fast TWAIN

\Examples\Scanning\DotNet\FastTwainDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
Fast TWAIN	\Examples\Scanning\DotNet\FastTwainDemo\net	\Bin\net\`FastTwainDemo_Original.exe`	Demonstrates Fast Twain scanning support. Analyzes the TWAIN source, considering the requested bits per pixel, image type and compression, and finds the best compression type, transfer mode and buffering schemes to get the best performance possible.

\Bin\net\FastTwainDemo_Original.exe

Demonstrates Fast Twain scanning support.

Analyzes the TWAIN source, considering the requested bits per pixel, image type and compression, and finds the best compression type, transfer mode and buffering schemes to get the best performance possible.

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN

\Examples\Scanning\DotNet\TwainDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN	\Examples\Scanning\DotNet\TwainDemo\net	\Bin\net\`TwainDemo_Original.exe`	Demonstrates TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\net\TwainDemo_Original.exe

Demonstrates TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN High Level

\Examples\Scanning\DotNet\TwainHighDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN High Level	\Examples\Scanning\DotNet\TwainHighDemo\net	\Bin\net\`TwainHighDemo_Original.exe`	Demonstrates the high-level LEADTOOLS TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\net\TwainHighDemo_Original.exe

Demonstrates the high-level LEADTOOLS TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN Multi-Page

\Examples\Scanning\DotNet\TwainMultipageDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN Multi-Page	\Examples\Scanning\DotNet\TwainMultipageDemo\net	\Bin\net\`TwainMultiPageDemo_Original.exe`	Demonstrates the multi-page scanning with LEADTOOLS TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\net\TwainMultiPageDemo_Original.exe

Demonstrates the multi-page scanning with LEADTOOLS TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN With Barcode Separator

\Examples\Scanning\DotNet\TwainWithBarcodeSeparatorDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN With Barcode Separator	\Examples\Scanning\DotNet\TwainWithBarcodeSeparatorDemo\net	\Bin\net\`TwainWithBarcodeSeparatorDemo_Original.exe`	Demonstrates TWAIN scanning and barcode separation feature. Scans pages from a TWAIN source and saves the acquired pages to multi-page TIFF files. Uses the LEADTOOLS barcode engine to search for Code128 barcodes on the pages. If a user-specified barcode string is detected, the separator is saved to a new TIFF file, which is appended with all subsequent pages until a new separator is detected.

\Bin\net\TwainWithBarcodeSeparatorDemo_Original.exe

Demonstrates TWAIN scanning and barcode separation feature.

Scans pages from a TWAIN source and saves the acquired pages to multi-page TIFF files.

Uses the LEADTOOLS barcode engine to search for Code128 barcodes on the pages.

If a user-specified barcode string is detected, the separator is saved to a new TIFF file, which is appended with all subsequent pages until a new separator is detected.

Demo Name Source Code Path Pre-Compiled Executable Path Description

WIA

\Examples\Scanning\DotNet\WiaDemo\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
WIA	\Examples\Scanning\DotNet\WiaDemo\net	\Bin\net\`WiaDemo_Original.exe`	Demonstrates WIA scanning features. Select WIA source Acquire images from WIA sources Display images acquired from WIA sources Save images acquired from WIA sources

\Bin\net\WiaDemo_Original.exe

Demonstrates WIA scanning features.

Select WIA source
Acquire images from WIA sources
Display images acquired from WIA sources
Save images acquired from WIA sources

Demo Name	Source Code Path	Description
Leadtools.WebScanning.Plugin	\Examples\Scanning\DotNet\WebScanning.Plugin\net	ActiveX plugin for Internet Explorer to start Leadtools.WebScanning.Host application. This plugin is registered in WebScanning MSI installation process.

Demo Name

Source Code Path

Description

Leadtools.WebScanning.Plugin

\Examples\Scanning\DotNet\WebScanning.Plugin\net

ActiveX plugin for Internet Explorer to start Leadtools.WebScanning.Host application.

This plugin is registered in WebScanning MSI installation process.

Demo Name Source Code Path Pre-Compiled Executable Path Description

Leadtools.WebScanning.Host

\Examples\Scanning\DotNet\WebScanning.Host\net

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
Leadtools.WebScanning.Host	\Examples\Scanning\DotNet\WebScanning.Host\net	\Bin\net\`Leadtools.WebScanning.Host.exe`	Hosts Leadtools.Services.Twain service. A custom application url is used for lunaching this application from browsers. Use "Utils.RegisterAppUrl" method to register a custom application url (for details, please check the Main method implementation of this demo in Program.cs ). For Internt Explorer: an ActiveX plugin (Leadtools.WebScanning.Plugin.dll) is used for launching this application.

\Bin\net\Leadtools.WebScanning.Host.exe

Hosts Leadtools.Services.Twain service.

A custom application url is used for lunaching this application from browsers.
Use "Utils.RegisterAppUrl" method to register a custom application url (for details, please check the Main method implementation of this demo in Program.cs ).

For Internt Explorer: an ActiveX plugin (Leadtools.WebScanning.Plugin.dll) is used for launching this application.

.NET Framework

Redistributables Paths

Path	Target Platform
<installdir>\Bin\DotNet4\Win32	x86 .NET 4 or 4.5
<installdir>\Bin\DotNet4\x64	x64 .NET 4 or 4.5

Assembly - Class/Namespace	Comments
Leadtools.Twain.DLL - Leadtools.Twain	The Leadtools.Twain namespace provides support for TWAIN scanning functionality.

Dependencies

Library	Description	Dependencies
Leadtools.Windows.Media.TransitionBase.dll	Core Library	Leadtools.dll


NuGet Package	Description
Leadtools.Twain	Enhanced TWAIN Library

Sample Programs

Demo Name Source Code Path Pre-Compiled Executable Path Description

Fast TWAIN

\Examples\Scanning\DotNet\FastTwainDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
Fast TWAIN	\Examples\Scanning\DotNet\FastTwainDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`FastTwainDemo.exe`	Demonstrates Fast Twain scanning support. Analyzes the TWAIN source, considering the requested bits per pixel, image type and compression, and finds the best compression type, transfer mode and buffering schemes to get the best performance possible.

\Bin\DotNet4\<Win32/Win32/x64/x64>\FastTwainDemo.exe

Demonstrates Fast Twain scanning support.

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN

\Examples\Scanning\DotNet\TwainDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN	\Examples\Scanning\DotNet\TwainDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`TwainDemo.exe`	Demonstrates TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\DotNet4\<Win32/Win32/x64/x64>\TwainDemo.exe

Demonstrates TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN High Level

\Examples\Scanning\DotNet\TwainHighDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN High Level	\Examples\Scanning\DotNet\TwainHighDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`TwainHighDemo.exe`	Demonstrates the high-level LEADTOOLS TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\DotNet4\<Win32/Win32/x64/x64>\TwainHighDemo.exe

Demonstrates the high-level LEADTOOLS TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN Multi-Page

\Examples\Scanning\DotNet\TwainMultipageDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN Multi-Page	\Examples\Scanning\DotNet\TwainMultipageDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`TwainMultiPageDemo.exe`	Demonstrates the multi-page scanning with LEADTOOLS TWAIN scanning features. Select TWAIN source Acquire images from TWAIN sources Display images acquired from TWAIN sources Save images acquired from TWAIN sources

\Bin\DotNet4\<Win32/Win32/x64/x64>\TwainMultiPageDemo.exe

Demonstrates the multi-page scanning with LEADTOOLS TWAIN scanning features.

Select TWAIN source
Acquire images from TWAIN sources
Display images acquired from TWAIN sources
Save images acquired from TWAIN sources

Demo Name Source Code Path Pre-Compiled Executable Path Description

TWAIN With Barcode Separator

\Examples\Scanning\DotNet\TwainWithBarcodeSeparatorDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
TWAIN With Barcode Separator	\Examples\Scanning\DotNet\TwainWithBarcodeSeparatorDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`TwainWithBarcodeSeparatorDemo.exe`	Demonstrates TWAIN scanning and barcode separation feature. Scans pages from a TWAIN source and saves the acquired pages to multi-page TIFF files. Uses the LEADTOOLS barcode engine to search for Code128 barcodes on the pages. If a user-specified barcode string is detected, the separator is saved to a new TIFF file, which is appended with all subsequent pages until a new separator is detected.

\Bin\DotNet4\<Win32/Win32/x64/x64>\TwainWithBarcodeSeparatorDemo.exe

Demonstrates TWAIN scanning and barcode separation feature.

Scans pages from a TWAIN source and saves the acquired pages to multi-page TIFF files.

Uses the LEADTOOLS barcode engine to search for Code128 barcodes on the pages.

If a user-specified barcode string is detected, the separator is saved to a new TIFF file, which is appended with all subsequent pages until a new separator is detected.

Demo Name Source Code Path Pre-Compiled Executable Path Description

WIA

\Examples\Scanning\DotNet\WiaDemo\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
WIA	\Examples\Scanning\DotNet\WiaDemo\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`WiaDemo.exe`	Demonstrates WIA scanning features. Select WIA source Acquire images from WIA sources Display images acquired from WIA sources Save images acquired from WIA sources

\Bin\DotNet4\<Win32/Win32/x64/x64>\WiaDemo.exe

Demonstrates WIA scanning features.

Select WIA source
Acquire images from WIA sources
Display images acquired from WIA sources
Save images acquired from WIA sources

Demo Name	Source Code Path	Description
Leadtools.WebScanning.Plugin	\Examples\Scanning\DotNet\WebScanning.Plugin\fx	ActiveX plugin for Internet Explorer to start Leadtools.WebScanning.Host application. This plugin is registered in WebScanning MSI installation process.

Demo Name

Source Code Path

Description

Leadtools.WebScanning.Plugin

\Examples\Scanning\DotNet\WebScanning.Plugin\fx

ActiveX plugin for Internet Explorer to start Leadtools.WebScanning.Host application.

This plugin is registered in WebScanning MSI installation process.

Demo Name Source Code Path Pre-Compiled Executable Path Description

Leadtools.WebScanning.Host

\Examples\Scanning\DotNet\WebScanning.Host\fx

Demo Name	Source Code Path	Pre-Compiled Executable Path	Description
Leadtools.WebScanning.Host	\Examples\Scanning\DotNet\WebScanning.Host\fx	\Bin\DotNet4\<Win32/Win32/x64/x64>\`Leadtools.WebScanning.Host.exe`	Hosts Leadtools.Services.Twain service. A custom application url is used for lunaching this application from browsers. Use "Utils.RegisterAppUrl" method to register a custom application url (for details, please check the Main method implementation of this demo in Program.cs ). For Internt Explorer: an ActiveX plugin (Leadtools.WebScanning.Plugin.dll) is used for launching this application.

\Bin\DotNet4\<Win32/Win32/x64/x64>\Leadtools.WebScanning.Host.exe

Hosts Leadtools.Services.Twain service.

For Internt Explorer: an ActiveX plugin (Leadtools.WebScanning.Plugin.dll) is used for launching this application.

Leadtools.Twain Getting Started

Summary

.NET

Redistributables Paths

Dependencies

Sample Programs

.NET Framework

Redistributables Paths

Dependencies

Sample Programs

See Also

Reference

Tutorials

Version History