PDFDrawExportAsync Method (Page, IFilter, String)

public IAsyncAction ExportAsync(
	Page page,
	IFilter filter,
	string format
)

Public Function ExportAsync ( 
	page As Page,
	filter As IFilter,
	format As String
) As IAsyncAction

public:
virtual IAsyncAction^ ExportAsync(
	[InAttribute] Page^ page, 
	[InAttribute] IFilter^ filter, 
	[InAttribute] String^ format
) sealed

function ExportAsync(page, filter, format);

Parameters

page

Type: pdftron.PDFPage
The page to export.

filter

Type: pdftron.FiltersIFilter
The output filter sink where to export to.

format

Type: SystemString
The file format of the output image. Currently supported formats are:

• "RAW" : RAW format. There are four possibilities: e_rgba - if transparent and color page; e_gray_alpha - if transparent and gray page; e_rgb - if opaque and color page; e_gray - if opaque and gray page. NOTE that if page is set to be transparent (SetPageTransparent), the output color channels are already multiplied by the alpha channel.
• "BMP" : Bitmap image format (BMP).
• "JPEG" : Joint Photographic Experts Group (JPEG) image format.
• "PNG" : 24-bit W3C Portable Network Graphics (PNG) image format.
• "PNG8" : 8-bit, palettized PNG format. The exported file size should be smaller than the one generated using "PNG", possibly at the expense of some image quality.
• "TIFF" : Tag Image File Format (TIFF) image format.
• "TIFF8" : Tag Image File Format (TIFF) image format (with 8-bit palette).

Return Value

Reference