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Decription
Priore TWAIN .NET Control is an invisible-at-runtime (windowless) control available for a .NET Windows Forms, which allows you to create sophisticated TWAIN compliant imaging applications.

Priore TWAIN .NET Control provides the following rich set of features:

Standard TWAIN image acquisition and Data Source selection.

Image acquisition without TWAIN User Interface.

Image object directly available after the acquisition.

Set the DPI resolution of the acquisition.

Set the image size of the acquisition.

Requirements
This component requires Visual .NET Framework 1.1 SP1. The component can be used with any development environment that supports its. This control depends on the .NET Framework 1.1 SP1 for VS.NET and TWAIN Library (TWAIN_32.DLL) version 1.7.1.1 or above.

Note
Some drivers scanners ignoring the settings of particular capability. One this situation is when you are trying to set or get the capability, which is not supported at all by your driver or when you are trying to set value out of the range of supported values for particular capability, particular device or context. This component not be able for to use with ADF (Automatic Document Feeder) special type scanners.

Request Feature

ver. 1.0

VB.NET Sample

Imports Priore.Controls

Dim TW As Twain
TW = New Twain(Me.Handle)
TW.Resolution = 100
TW.ColorType = Twain.TWAIN_CLASS_COLOURTPYE.twRGB
TW.ShowInterface = True
TW.ShowProgress = True
TW.StartScan
PictureBox1.Image = TW.Image
TW.Image.Save(“myimage.jpg”)

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What is TWAIN ?

TWAIN defines a standard software protocol and application programming interface (API) for communication between software applications and image acquisition devices.
TWAIN Provides image acquisition solutions
Users need a painless way to get image data into their applications. Software developers need compatibility with the widest range of output devices without writing and maintaining multiple device drivers.
The solution to this situation is an open industry interface (TWAIN) that directly acquires image data from external sources while within an application. With this, each software developer supports a standard data acquisition manager and each hardware vendor writes one driver for their device. Hardware vendors benefit because they need only provide one standard driver for their device, which can then be used by all software applications supporting the TWAIN data acquisition interface.
TWAIN defines how application developers can acquire image data directly into their application without requiring the user to switch out of the application. To provide this feature, TWAIN requires Data Sources to provide a built-in user interface (UI) for their device. Application developers can, if they choose, disable the built-in User Interface provided by the Data Source and provide their own User Interface to control TWAIN devices.

Features

Propertys

Description

Left, Top, Right, Bottom	Return or set the coordinate for image size during the acquisition.
ColorType	Return or set the pixel type of the current acquisition.
Image	Return the current acquisition image on System.Drawing.Image object.
Resolution	Return or set the current DPI resolution for the acquisition.
ShowInterface	Return or set if the standard dialog must be shown. Some drivers scanners ignoring the settings of particular capability when your set this param to False. One this situation is when you are trying to set or get the capability, which is not supported at all by your driver or when you are trying to set value out of the range of supported values for particular capability, particular device or context.
ShowProgress	Return or set if the standard progress dialog must be shown.
UnitType	Return or set the units for Left, Top, Right and Bottom Propertys.

Methods

Description

CancelOperation	Cancel the current acquisition.
SelectSource	Displays the TWAIN Data Source Manager's for Source Selection.
StartScan	Start the acquisition.