- Dynamic XFA
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- Use multiple licenses
- Replace field with image
- Import FDF into PDF
- Embed TrueType font in PDF
- Determine if a PDF only contains images
- Download and convert image to PDF
- Use TrueType font collections
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- How to generate and export certificates
- Write Document to HttpResponse
- Create rectangles with rounded corners
- Add barcodes to PDF
- Append two or more existing PDF files
- pdfkit5 and .NET Core
- Create a text annotation in PDF with rich text
- Rotate a PDF page
- Add text field to PDF
- Change the color inside a PDF
- How to embed files in a PDF document
- Merge XDP data with dynamic XFA form
- How to mirror PDF pages and other shapes
- Add a Diagonal Watermark to PDF in C# - TallComponents - PDF Library
- Read PDF tags
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- Tagged PDF
- Read and write meta data from PDF
- Add footer to PDF
- Create a custom signature handler to sign and verify PDF documents
- Export FDF from PDF form
- Create text with decorations
- Fill XFA form and export XDP data
- Vector graphics in PDF
- Resize PDF pages
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- Reduce PDF size
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- Fill PDF form
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- Add a rubber stamp annotation with a custom icon
- Add Long Term Validation (LTV) data to an existing signature
- How to create a tiling for shapes in PDF
- Search text in PDF
- Digitally sign a PDF form in C# or VB.NET
- Add simple html text to PDF
Create a text annotation in PDF with rich text
This sample shows how to create annotations in PDF that use a rich text for their appearance. This can be done with PDFKit or PDFControls. With ‘rich text’ we mean the rich text as is described in the PDF reference at page 680 under ‘Rich Text Strings’.
C# code sample for text annotation with rich text in PDF
Step 1: Define your rich text
var rich_text = "<?xml version=\"1.0\"?><body xmlns=\"http://www.w3.org/1999/xhtml\"><p style=\"color:#000000;\">Black </p><p style=\"color:#FF0000;\">Red </p><p style=\"color:#1E487C;\">Blue </p></body>";
Step 2: Create a free text annotation, use the rich text
//create a freetext annotation
var txt = new FreeText(100, 600, 80, 60)
{
Text = rich_text,
};
Step 3: (optional) Add a popup to the free text annotation
//create a popup and assign it to the freetext
txt.Popup = new Popup(140, 500, 200, 100) { Open = true };
Step 4: Create a pdf document with the free text annotation
We create a PDF document and add the free text annotation to it.
//create new document
var document = new Document();
//create a page and add to the document
var page = new Page(PageSize.Letter);
document.Pages.Add(page);
... // Here comes the code to create the free text annotation
//add the free text annotation to the page
page.Markups.Add(txt);
//write the PDF document to the disk
const string fileName = @"FreeText.pdf";
using (var file = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
document.Write(file);
}
// open the PDF document
Process.Start(fileName);
Restrictions
The supported rich text format by PDF is restricted by the specifications and the abality of the reader software. The current sample deals with the following restrictions when using Adobe Acrobat Reader DC:
- Formating the rich text string with tabs and newlines for readability in the code will change the result;
- Where you would expect that the <p> element to create paragraphs, the encoding for a newline is needed to ensure that the texts appear on seperate lines;
- For colours hexa codes must be used as color names (‘red’, ‘black’, ‘blue’) are not processed.
<footer></footer>