GroupDocs.Redaction for .NET 20.11 Release Notes
This page contains release notes for GroupDocs.Redaction for .NET 20.11
Major Features
There are the following improvements in this release:
- Improve PDF preview generation
Full List of Issues Covering all Changes in this Release
| Key | Summary | Category |
|---|---|---|
| REDACTIONNET-331 | Improve PDF preview generation | Improvement |
Public API and Backward Incompatible Changes
This section lists public API changes that were introduced in GroupDocs.Redaction for .NET 20.11. It includes not only new and obsoleted public methods, but also a description of any changes in the behavior behind the scenes in GroupDocs.Redaction which may affect existing code. Any behavior introduced that could be seen as a regression and modifies existing behavior is especially important and is documented here.
Improve PDF preview generation
This feature contains improvements for PDF preview rendering and embedded images redactions.
Public API changes
Interface IPreviewable providing methods for getting a general document information and previews has been added.
Class Redactor now implements interface IPreviewable.
Usage
The following example demonstrates how to get a single page preview of the document.
C#
// Take preview of the first page
int testPageNumber = 1;
// Preview file name
string previewFileName = string.Format("{0}_page{1}.png", "D:\\sample.pdf", testPageNumber);
// Load the document to generate preview
using (Redactor redactor = new Redactor("D:\\sample.pdf"))
{
PreviewOptions options = new PreviewOptions(delegate(int pageNumber)
{
return File.OpenWrite(previewFileName);
});
options.Width = 480;
options.Height = 640;
options.PageNumbers = new int[] { testPageNumber };
options.PreviewFormat = PreviewOptions.PreviewFormats.PNG;
redactor.GeneratePreview(options);
Console.WriteLine("\nPreview for page: {0} was saved to \"{1}\"", testPageNumber, previewFileName);
}