How to disable the progress indicator dialog when UI is not used?

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Here is an example that demonstrates how to disable the progress indicator dialog if UI is not used:

/// <summary>
/// Acquire images without UI and progress indicator.
/// </summary>
public void AcquireImageWithoutUiAndProgressIndicator(Vintasoft.Twain.Device device)
{
    // disable UI
    device.ShowUI = false;
    // disable the progress indicator
    device.ShowIndicators = false;

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

VB.NET

''' <summary>
''' Acquire images without UI and progress indicator.
''' </summary>
Public Sub AcquireImageWithoutUiAndProgressIndicator(ByVal device As Vintasoft.Twain.Device)
    ' disable UI
    device.ShowUI = False
    ' disable the progress indicator
    device.ShowIndicators = False

    ' acquire images asynchronously
    device.Acquire()
End Sub

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