Prior to saving an image, set the SaveOptions to provide specific instructions for saving the image. If no save options are specified, ImagXpress® uses default values when saving the image.
Save to a Local Disk File
To save an image to a file, use the ImageX.Save methods. ImagXpress converts and compresses the image to the file format specified, and saves it to the target location. While ImagXpress is compressing and saving the image, the ImageX.ImageStatus and Progress events provide information on the status of the operations.
Save to an FTP Location
ImagXpress supports saving image files to an FTP locations, as follows:
1. To specify passwords or proxy settings, set the Internet property within SaveOptions
2. Call one of the following:
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Make sure that the String parameter specifies the full Internet path and file name. |
3. A copy of the ImageX image is stored in the target location.
Save a Multi-Page Image
ImagXpress supports the following multi-page image formats: TIFF, PDF, ICO and DCX. Multi-page images can be compressed and saved in both the Standard and Professional Editions.
| C# Example |  Copy Code |
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// This code demonstrates saving a multi-page image SaveOptions soOpts = new SaveOptions(); soOpts.Format = ImageXFormat.Tiff; soOpts.Tiff.Compression = Compression.Group4; soOpts.Tiff.MultiPage = true; ImgX.Image = ImageX.FromFile(strFileName); for (int i = 1; i <=ImgX.Image.PageCount; i++) { ImgX.Image.Page = i; ImgX.Image.Save("c:\\multipagetest.tif",Opts); } |
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ImagXpress does not support saving to a multipage image at an HTTP or FTP location. |
Fast Saving of Multi-page TIFF Files (generally over 1000 pages)
When the SaveOptionsTiff.UseIFDOffset property is false (default), the image is appended to the end of the multi-page TIFF. Due to the linked format of TIFF, the software must traverse all the link pointers to identify the location to which the new page will be appended. The greater the number of pages in the target TIFF file, the longer the write process takes. (Typically, if the target file has more than 1000 pages, the write speed will degrade substantially.
Setting the SaveOptionsTiff.UseIFDOffset property to true specifies that the control should write the image to the location stored in the SaveOptionsTiff.IFDOffset property. This enables much faster writing of TIFF files with many pages because the software can seek to that location without traversing all previous pointer links. This process gives very predictable speeds in adding pages to a multi-page TIFF file.
Important
If the file's IFDOffset ever became out of sync with the SaveOptionsTiff.IFDOffset property value, file corruption could occur. To protect the application from inadvertently corrupting a saved mutli-page file, the ImagXpress control takes the following measures:
- If the application sets the SaveOptionsTiff.UseIFDOffset property to true or false, the SaveOptionsTiff.IFDOffset property is automatically set to zero. The application must then explicitly set the IFD Offset to be used.
- Executing any Save method will automatically set the SaveOptionsTiff.UseIFDOffset property to false. The application must then explicitly set the value back to true as needed.
- Executing any Load method will automatically set the SaveOptionsTiff.IFDOffset to zero, and SaveOptionsTiff.UseIFDOffset to false. The application must then explicitly set the SaveOptionsTiff.UseIFDOffset to true as needed.
- When the SaveOptionsTiff.IFDOffset property is zero, a normal write (not fast TIFF write) will occur regardless of the SaveOptionsTiff.UseIFDOffset value. The fast write will take place only when SaveOptionsTiff.IFDOffset is set to non-zero and the SaveOptionsTiff.UseIFDOffset is set to true.
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No other operation with the TIFF file should be done during the looping of saving the pages with a fast TIFF write. It would be detrimental to call either the ImageX.ReadAllMetaData, ImageX.SaveAllMetaData, ImageX.CompactFile, ImageX.DeletePage, or ImageX.InsertPage methods in the middle of doing a fast TIFF write as they would definitely affect the IFD offsets in the file. |
