C# PDF Viewer, Reader Control
How to load, open, view, redact Adobe PDF file pages using c#, in web browser, windows WinForms, WPF

• A best .NET PDF document manipulation SDK control for Visual Studio .NET can help to protect adobe PDF file with redaction functionalities using C#
• Free online C# source code to darken pages from adobe PDF file in Visual C#. NET program without adobe reader installed
• Support .NET WinForms, ASP.NET MVC in IIS, ASP.NET Ajax, Azure cloud service, DNN (DotNetNuke), SharePoint
• Free evaluation library and components for erasing PDF page in all C#.NET WinForms application
• Able to black out PDF page online in ASP.NET WebForm application
• Support to adjust color and transparency while scraping text from PDF file in .NET framework
• Able to redact a range of selected pages in PDF document
• Support to redact whole PDF pages in Visual Studio .NET

Redaction is the process of permanently removing visible text and graphics from a document. You can call our redact function API to redact entire PDF pages. You can specify custom text to appear over the redaction area.

Redact the whole pdf page using c#

String inputFilePath = Program.RootPath + "\\" + "1.pdf";
String outputFilePath = Program.RootPath + "\\" + "output.pdf";

//  open document
PDFDocument doc = new PDFDocument(inputFilePath);
//  get the 1st page
PDFPage page = (PDFPage)doc.GetPage(0);

//  create redaction option
RedactionOptions options = new RedactionOptions();
options.AreaFillColor = Color.Black;

//  redact the whole page
page.Redact(options);
//  output file
doc.Save(outputFilePath);