GetRasterPdfInfoAsync Method

public IAsyncOperation<CodecsRasterPdfInfo> GetRasterPdfInfoAsync( 
   ILeadStream stream,
   int pageNumber
)

'Declaration
 

Public Function GetRasterPdfInfoAsync( _
   ByVal stream As ILeadStream, _
   ByVal pageNumber As Integer _
) As IAsyncOperation(Of CodecsRasterPdfInfo)

'Usage
 

Dim instance As RasterCodecs
Dim stream As ILeadStream
Dim pageNumber As Integer
Dim value As IAsyncOperation(Of CodecsRasterPdfInfo)
 
value = instance.GetRasterPdfInfoAsync(stream, pageNumber)

public IAsyncOperation<CodecsRasterPdfInfo> GetRasterPdfInfoAsync( 
   ILeadStream stream,
   int pageNumber
)

 function Leadtools.Codecs.RasterCodecs.GetRasterPdfInfoAsync( 
   stream ,
   pageNumber 
)

public:
IAsyncOperation<CodecsRasterPdfInfo>^ GetRasterPdfInfoAsync( 
   ILeadStream^ stream,
   int pageNumber
) 

Parameters

stream

The input PDF stream.

pageNumber

The 1-based page number.

Return Value

The various RasterCodecs.GetInformation methods are used to return information about a raster image file on disk or stream. Information such as the format, size, dimension, bits per pixel are returned as members of the CodecsImageInfo object returned from RasterCodecs.GetInformation.

Raster Adobe PDF saved with the various Save methods (using any of the RasterImageFormat.RasPdfXyz flavors), contain extra information that can be obtained using RasterCodecs.GetRasterPdfInfo. This method returns an instance of CodecsRasterPdfInfo filled with this extra information. Refer to CodecsRasterPdfInfo for more information.

Target Platforms

Reference

RasterCodecs Class
RasterCodecs Members
Implementing PDF Features