PageOrientation Свойство (Device)

В этом разделе

Gets or sets the orientation of images for current scan session.

Синтаксис

Visual Basic
C#
Управляемые расширения для C++
C++/CLI

'Declaration

Public Property PageOrientation As PageOrientation

public PageOrientation PageOrientation { get; set; }

public: __property PageOrientation get_PageOrientation();
public: __property void set_PageOrientation(
   PageOrientation value
);

public:
property PageOrientation PageOrientation {
   PageOrientation get();
   void set(PageOrientation value);
}

Исключения

Исключение	Описание
TwainInvalidStateException	Thrown if device is in wrong state.
TwainDeviceCapabilityException	Thrown if device does not support capability.
DebuggerException	Thrown if the .NET debugger is used and the function evaluation requires all threads to run.

Ремарки

Call this property only when device is opened (DeviceState == DeviceState.Opened).

Пример

This C#/VB.NET code shows how to acquire A4 black-white images from the device.

VB.NET


Public Sub ScanPage(device As Vintasoft.Twain.Device)
    device.ShowUI = False
    device.DisableAfterAcquire = True

    device.Open()
    device.PixelType = Vintasoft.Twain.PixelType.BW
    device.PageSize = Vintasoft.Twain.PageSize.A4
    device.PageOrientation = Vintasoft.Twain.PageOrientation.Landscape
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches
    device.Resolution = New Vintasoft.Twain.Resolution(300.0F, 300.0F)

    device.Acquire()
End Sub


public void ScanPage(Vintasoft.Twain.Device device)
{
    device.ShowUI = false;
    device.DisableAfterAcquire = true;

    device.Open();
    device.PixelType = Vintasoft.Twain.PixelType.BW;
    device.PageSize = Vintasoft.Twain.PageSize.A4;
    device.PageOrientation = Vintasoft.Twain.PageOrientation.Landscape;
    device.UnitOfMeasure = Vintasoft.Twain.UnitOfMeasure.Inches;
    device.Resolution = new Vintasoft.Twain.Resolution(300f, 300f);

    device.Acquire();
}

Требования

Целевые платформы: .NET 9; .NET 8; .NET 7; .NET 6; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Смотрите также

Справочник

Device Class
Члены типа Device

Open
PageSize

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