Overloads Overridable Sub ExportPage( _
   ByVal pageIndex As Integer, _
   ByVal fileName As String, _
   ByVal format As RasterImageFormat, _
   ByVal bitsPerPixel As Integer _
) 

Visual Basic (Usage)	Copy Code
Dim instance As IOcrPageCollection Dim pageIndex As Integer Dim fileName As String Dim format As RasterImageFormat Dim bitsPerPixel As Integer   instance.ExportPage(pageIndex, fileName, format, bitsPerPixel)

virtual void ExportPage( 
   int pageIndex,
   string fileName,
   RasterImageFormat format,
   int bitsPerPixel
)

virtual void ExportPage( 
   int pageIndex,
   String^ fileName,
   RasterImageFormat format,
   int bitsPerPixel
) 

Parameters

pageIndex

The zero-based index of the page to export.

fileName

The name of the file to save the page to.

format

The image file format to use.

bitsPerPixel

The bits/pixel value of the result image file.

This example will add a page to an OCR document before exporting it back to disk

Visual Basic

Copy Code

Public Sub ExportPageToFile()    ' Unlock the support needed for LEADTOOLS Plus OCR engine    RasterSupport.Unlock(RasterSupportType.Document, "Replace with your own key here")    RasterSupport.Unlock(RasterSupportType.OcrPlus, "Replace with your own key here")    RasterSupport.Unlock(RasterSupportType.OcrPlusPdfLeadOutput, "Replace with your own key here")    Dim tifFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.tif"    Dim exportedFileName As String = LeadtoolsExamples.Common.ImagesPath.Path + "OcrExported.jpg"    ' Create an instance of the engine    Using ocrEngine As IOcrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, False)       ' Since we have a RasterCodecs object, re-use it in the OCR engine. Although       ' this demo will not use it, it is always a good practice       ocrEngine.Startup(Nothing, Nothing, Nothing, Nothing)       ' Create an OCR document       Using ocrDocument As IOcrDocument = ocrEngine.DocumentManager.CreateDocument()          ' Add the image to the document          ocrDocument.Pages.AddPage(tifFileName, Nothing)          ' Save it to disk          ocrDocument.Pages.ExportPage(0, exportedFileName, RasterImageFormat.Jpeg, 0)       End Using       ' Shutdown the engine       ' Note: calling Dispose will also automatically shutdown the engine if it has been started       ocrEngine.Shutdown()    End Using End Sub

C#

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public void ExportPageToFile()  {     // Unlock the support needed for LEADTOOLS Plus OCR engine     RasterSupport.Unlock(RasterSupportType.Document, "Replace with your own key here");     RasterSupport.Unlock(RasterSupportType.OcrPlus, "Replace with your own key here");     RasterSupport.Unlock(RasterSupportType.OcrPlusPdfLeadOutput, "Replace with your own key here");     string tifFileName = LeadtoolsExamples.Common.ImagesPath.Path + "Ocr1.tif";     string exportedFileName = LeadtoolsExamples.Common.ImagesPath.Path + "OcrExported.jpg";       // Create an instance of the engine     using(IOcrEngine ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.Plus, false))     {        // Since we have a RasterCodecs object, re-use it in the OCR engine. Although        // this demo will not use it, it is always a good practice        ocrEngine.Startup(null, null, null, null);          // Create an OCR document        using(IOcrDocument ocrDocument = ocrEngine.DocumentManager.CreateDocument())        {           // Add the image to the document           ocrDocument.Pages.AddPage(tifFileName, null);             // Save it to disk           ocrDocument.Pages.ExportPage(0, exportedFileName, RasterImageFormat.Jpeg, 0);        }          // Shutdown the engine        // Note: calling Dispose will also automatically shutdown the engine if it has been started        ocrEngine.Shutdown();     }  }

To export more than one page to a multi-page disk file, use ExportPages(int firstPageIndex, int lastPageIndex, string fileName, RasterImageFormat format, int bitsPerPixel, int firstSavePageNumber, CodecsSavePageMode pageMode).

You can export the page to any of the file formats supported by LEADTOOLS. For more information, refer to Summary of All Supported Image File Formats.

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference