How to acquire black-white images from TWAIN scanner?

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Type of acquired images can be set using Device.PixelType property.

Here is an example that demonstrates how to acquire black-white images from TWAIN device:

/// <summary>
/// Acquire black-white images.
/// </summary>
public void AcquireBlackWhiteImage(Vintasoft.Twain.Device device)
{
    // disable UI
    device.ShowUI = false;

    // open the device
    device.Open();
    // specify that black-white images must be acquired
    device.PixelType = Vintasoft.Twain.PixelType.BW;

    // acquire images asynchronously
    device.Acquire();
}

VB.NET

''' <summary>
''' Acquire black-white images.
''' </summary>
Public Sub AcquireBlackWhiteImage(device As Vintasoft.Twain.Device)
        ' disable UI
        device.ShowUI = False

        ' open the device
        device.Open()
        ' specify that black-white images must be acquired
        device.PixelType = Vintasoft.Twain.PixelType.BW

        ' acquire images asynchronously
        device.Acquire()
End Sub

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