private static void GenerateHeaderPartContent(HeaderPart part) { var header1 = new Header() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "w14 wp14" } }; var paragraph1 = new Paragraph() { RsidParagraphAddition = "00164C17", RsidRunAdditionDefault = "00164C17" }; var paragraphProperties1 = new ParagraphProperties(); var paragraphStyleId1 = new ParagraphStyleId() { Val = "Header" }; paragraphProperties1.Append(paragraphStyleId1); var run1 = new Run(); var text1 = new Text { Text = "Header" }; run1.Append(text1); paragraph1.Append(paragraphProperties1); paragraph1.Append(run1); header1.Append(paragraph1); part.Header = header1; }