document-processing-docs/knowledge-base/insert_field_in_header.md

title	description	type	page_title	slug	position	tags	res_type
Insert Field in Header	Learn how you can insert a field in the header of a document using WordsProcessing.	how-to	Insert Field in Header	insert_field_in_header	0	header, field	kb

Product Version	Product	Author
2020.3.1019	RadWordsProcessing	Dimitar Karamfilov

Description

You need to add a field in the header for example to display page numbering.

Solution

This can be achieved by adding a paragraph to the header and then moving the editor position to this paragraph. Once this is done you can insert the field and move the position to another paragraph in the document.

C# Insert page numbering in he header

{{region insert_field_in_header}}

RadFlowDocument document = new RadFlowDocument();

var section = document.Sections.AddSection();
var header = section.Headers.Add();

Paragraph paragraph = header.Blocks.AddParagraph();
paragraph.TextAlignment = Alignment.Right;

RadFlowDocumentEditor editor = new RadFlowDocumentEditor(document);
editor.MoveToParagraphStart(paragraph);

editor.InsertText("Page ");
editor.InsertField("PAGE", "3");
editor.InsertText(" of ");
editor.InsertField("NUMPAGES", "5");

var paragrpah2 = section.Blocks.AddParagraph();
editor.MoveToParagraphStart(paragrpah2);

document.UpdateFields();

{{endregion}}