The InsertPages(Int32,Uri,Int32,Int32,OcrProgressCallback) Method is available as an add-on to the LEADTOOLS Document and Medical Imaging toolkits.
- pageIndex
- The zero-based index at which the new pages from uri should be inserted.
- uri
- A URI containing the path to the image.
- imageFirstPageNumber
- 1-based index of the first page in uri to insert.
- callback
- Optional callback to show operation progress.
Visual Basic (Declaration) | |
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Overloads Sub InsertPages( _ ByVal pageIndex As Integer, _ ByVal uri As Uri, _ ByVal imageFirstPageNumber As Integer, _ ByVal imageLastPageNumber As Integer, _ ByVal callback As OcrProgressCallback _ ) |
Visual Basic (Usage) | Copy Code |
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Dim instance As IOcrPageCollection Dim pageIndex As Integer Dim uri As Uri Dim imageFirstPageNumber As Integer Dim imageLastPageNumber As Integer Dim callback As OcrProgressCallback instance.InsertPages(pageIndex, uri, imageFirstPageNumber, imageLastPageNumber, callback) |
C# | |
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void InsertPages( int pageIndex, Uri uri, int imageFirstPageNumber, int imageLastPageNumber, OcrProgressCallback callback ) |
C++/CLI | |
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void InsertPages( int pageIndex, Uri^ uri, int imageFirstPageNumber, int imageLastPageNumber, OcrProgressCallback^ callback ) |
Parameters
- pageIndex
- The zero-based index at which the new pages from uri should be inserted.
- uri
- A URI containing the path to the image.
- imageFirstPageNumber
- 1-based index of the first page in uri to insert.
- imageLastPageNumber
- 1-based index of the last page in uri to insert. A value of -1 means insert up to and including the last page in uri.
- callback
- Optional callback to show operation progress.
The URI can point to a file in a remote HTTP server, UNC or FTP.
A short-cut to insert all the pages of an image file stored in a URI is InsertPages(index, uri, 1, -1, callback)
.
To insert a single page from a multi-page image stored in a URI, you can also use AddPage(int pageIndex, Uri uri, OcrProgressCallback callback).
The image file in uri 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.
Target Platforms: Microsoft .NET Framework 2.0, Windows 2000, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7