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Recognize(Int32,Int32,OcrProgressCallback) Method
See Also 
Leadtools.Forms.Ocr Namespace > IOcrPageCollection Interface > Recognize Method : Recognize(Int32,Int32,OcrProgressCallback) Method



firstPageIndex
The zero-based index of the first page to recognize.
lastPageIndex
The zero-based index of the last page to recognize. A value of -1 means recognize up to and including the last page in the OCR document.
callback
Optional callback to show operation progress.

The Recognize(Int32,Int32,OcrProgressCallback) Method is available as an add-on to the LEADTOOLS Document and Medical Imaging toolkits.

firstPageIndex
The zero-based index of the first page to recognize.
lastPageIndex
The zero-based index of the last page to recognize. A value of -1 means recognize up to and including the last page in the OCR document.
callback
Optional callback to show operation progress.
Recognizes the OCR data found on a range of pages in the OCR document.

Syntax

Visual Basic (Declaration) 
Overloads Sub Recognize( _
   ByVal firstPageIndex As Integer, _
   ByVal lastPageIndex As Integer, _
   ByVal callback As OcrProgressCallback _
) 
Visual Basic (Usage)Copy Code
Dim instance As IOcrPageCollection
Dim firstPageIndex As Integer
Dim lastPageIndex As Integer
Dim callback As OcrProgressCallback
 
instance.Recognize(firstPageIndex, lastPageIndex, callback)
C# 
void Recognize( 
   int firstPageIndex,
   int lastPageIndex,
   OcrProgressCallback callback
)
C++/CLI 
void Recognize( 
   int firstPageIndex,
   int lastPageIndex,
   OcrProgressCallback^ callback
) 

Parameters

firstPageIndex
The zero-based index of the first page to recognize.
lastPageIndex
The zero-based index of the last page to recognize. A value of -1 means recognize up to and including the last page in the OCR document.
callback
Optional callback to show operation progress.

Example

For an example, refer to IOcrPageCollection.

Remarks

For more information on recognition of OCR data a page, refer to IOcrPage.Recognize.

This method will iterate through all the pages between firstPageIndex and lastPageIndex in the OCR document and run IOcrPage.Recognize on each page.

To recognize all the pages in the OCR document use Recognize(OcrProgressCallback callback).

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

Requirements

Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7

See Also

Recognize(Int32,Int32,OcrProgressCallback) requires an OCR module license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features