BitmapDecoder.GetThumbnailAsync Method

Definition

Namespace:

Windows.Graphics.Imaging

Asynchronously returns a stream containing the thumbnail image.

public:
 virtual IAsyncOperation<ImageStream ^> ^ GetThumbnailAsync() = GetThumbnailAsync;

/// [Windows.Foundation.Metadata.RemoteAsync]
IAsyncOperation<ImageStream> GetThumbnailAsync();

[Windows.Foundation.Metadata.RemoteAsync]
public IAsyncOperation<ImageStream> GetThumbnailAsync();

function getThumbnailAsync()

Public Function GetThumbnailAsync () As IAsyncOperation(Of ImageStream)

Returns

IAsyncOperation<ImageStream>

Object that manages the asynchronous retrieval of the thumbnail stream.

The thumbnail data is returned in the form of an image stream. You can display it using an image control, or read and edit it using BitmapDecoder and BitmapEncoder

Implements

GetThumbnailAsync()

Attributes

RemoteAsyncAttribute

Remarks

Many image formats, like JPEG and TIFF, allow a small sized thumbnail of the full image to be embedded within a frame. If the image does not contain a thumbnail, then this operation will fail with HRESULT WINCODEC_ERR_CODECNOTHUMBNAIL. If it exists, the EXIF orientation flag on the frame is automatically applied to the thumbnail before it is returned.