AppendParagraph

public Paragraph AppendParagraph(string text)

Document doc = new Document();

// Create a header and append a paragraph to it. The text in that paragraph
// will appear at the top of every page of this section, above the main body text.
HeaderFooter header = new HeaderFooter(doc, HeaderFooterType.HeaderPrimary);
doc.FirstSection.HeadersFooters.Add(header);

Paragraph para = header.AppendParagraph("My header.");

Assert.True(header.IsHeader);
Assert.True(para.IsEndOfHeaderFooter);

// Create a footer and append a paragraph to it. The text in that paragraph
// will appear at the bottom of every page of this section, below the main body text.
HeaderFooter footer = new HeaderFooter(doc, HeaderFooterType.FooterPrimary);
doc.FirstSection.HeadersFooters.Add(footer);

para = footer.AppendParagraph("My footer.");

Assert.False(footer.IsHeader);
Assert.True(para.IsEndOfHeaderFooter);

Assert.AreEqual(footer, para.ParentStory);
Assert.AreEqual(footer.ParentSection, para.ParentSection);
Assert.AreEqual(footer.ParentSection, header.ParentSection);

doc.Save(ArtifactsDir + "HeaderFooter.Create.docx");