public void AddHeaderFromTo(string filepathFrom, string filepathTo)
{
// Replace header in target document with header of source document.
using (WordprocessingDocument
wdDoc = WordprocessingDocument.Open(filepathTo, true))
{
MainDocumentPart mainPart = wdDoc.MainDocumentPart;
// Delete the existing header part.
mainPart.DeleteParts(mainPart.HeaderParts);
// Create a new header part.
DocumentFormat.OpenXml.Packaging.HeaderPart headerPart =
mainPart.AddNewPart <HeaderPart>();
// Get Id of the headerPart.
string rId = mainPart.GetIdOfPart(headerPart);
// Feed target headerPart with source headerPart.
using (WordprocessingDocument wdDocSource =
WordprocessingDocument.Open(filepathFrom, true))
{
DocumentFormat.OpenXml.Packaging.HeaderPart firstHeader =
wdDocSource.MainDocumentPart.HeaderParts.FirstOrDefault();
wdDocSource.MainDocumentPart.HeaderParts.FirstOrDefault();
if (firstHeader != null)
{
headerPart.FeedData(firstHeader.GetStream());
}
}
// Get SectionProperties and Replace HeaderReference with new Id.
IEnumerable <SectionProperties> sectPrs = mainPart.Document.Body.Elements <SectionProperties>();
foreach (var sectPr in sectPrs)
{
// Delete existing references to headers.
sectPr.RemoveAllChildren <HeaderReference>();
// Create the new header reference node.
sectPr.PrependChild <HeaderReference>(new HeaderReference()
{
Id = rId
});
}
}
}
