InsertPages(Int32,Stream,Int32,Int32,OcrProgressCallback) Method

Insert one or more pages from a multi-page image file stored in a .NET stream at the specified location.

Syntax

Visual Basic
C#
WinRT C#
WinRT JavaScript
C++

void InsertPages( 
   int pageIndex,
   Stream stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback callback
)

'Declaration
 
Overloads Sub InsertPages( _
   ByVal pageIndex As Integer, _
   ByVal stream As Stream, _
   ByVal imageFirstPageNumber As Integer, _
   ByVal imageLastPageNumber As Integer, _
   ByVal callback As OcrProgressCallback _
)

'Usage
 
Dim instance As IOcrPageCollection
Dim pageIndex As Integer
Dim stream As Stream
Dim imageFirstPageNumber As Integer
Dim imageLastPageNumber As Integer
Dim callback As OcrProgressCallback
 
instance.InsertPages(pageIndex, stream, imageFirstPageNumber, imageLastPageNumber, callback)

void InsertPages( 
   int pageIndex,
   Stream stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback callback
)

function Leadtools.Forms.Ocr.IOcrPageCollection.InsertPages(Int32,Stream,Int32,Int32,OcrProgressCallback)( 
   pageIndex ,
   stream ,
   imageFirstPageNumber ,
   imageLastPageNumber ,
   callback 
)

void InsertPages( 
   int pageIndex,
   Stream^ stream,
   int imageFirstPageNumber,
   int imageLastPageNumber,
   OcrProgressCallback^ callback
)

Parameters

pageIndex: The zero-based index at which the new pages from stream should be inserted.
stream: The .NET stream containing the multi-page image file.
imageFirstPageNumber: 1-based index of the first page in stream to insert.
imageLastPageNumber: 1-based index of the last page in stream to insert. A value of -1 means insert up to and including the last page in stream.
callback: Optional callback to show operation progress.

Remarks

A short-cut to insert all the pages of an image file stored in a stream to the OCR document is InsertPages(index, stream, 1, -1, callback).

To insert a single page from a multi-page image stored in a stream, you can also use AddPage(int pageIndex, Stream stream, OcrProgressCallback callback).

The image file in stream can be any of the file formats supported by LEADTOOLS. For more information, refer to Summary of All Supported Image File Formats.

You can use the OcrProgressCallback to show the operation progress or to abort it. For more information and an example, refer to OcrProgressCallback.

The LEADTOOLS OCR engine supports pages of dots per inch (DPI) values of 150 and greater. If you try to add a page with a DPI of less than 150 then the engine might be able to recognize any data from this page.

Note, the LEADTOOLS Plus OCR engine does not support image size greater than A3 paper size (11.7 by 16.5 inches at 300 dpi). Attempting to add an image that has a size greater than A3 will result in an error. For document of size greater than the maximum allowed, you must first resize the image before adding it to the LEADTOOLS Plus OCR engine. The Professional and Advantage engines do not have a restriction on the image size.

Example

For an example on how to insert a page, refer to InsertPage. For an example on how to add pages from a .NET stream, refer to AddPages.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

IOcrPageCollection Interface
IOcrPageCollection Members
Overload List
OcrEngineManager Class
OcrEngineType Enumeration
IOcrPage Interface
Programming with the LEADTOOLS .NET OCR
Summary of All Supported Image File Formats