Hi,
you can easily
C# edit Word with this
C# / VB.NET Word component.
Here is a sample
C# DOCX code:
ComponentInfo.SetLicense("FREE-LIMITED-KEY");
var document = DocumentModel.Load("Document.docx", LoadOptions.DocxDefault);
var section = document.Sections.Single();
section.HeadersFooters.Add(new HeaderFooter(document, HeaderFooterType.HeaderDefault, new Paragraph(document, "This is header content")));
section.HeadersFooters.Add(new HeaderFooter(document, HeaderFooterType.FooterDefault, new Paragraph(document, new Picture(document, "MyImage.png"))));
document.Save("Document.docx", SaveOptions.DocxDefault);