Replace text in header or footer of a document with VSTO

In order to replace a text in any section of the header or the footer of a word document, you can use this snippet

doc = Document Object

foreach (Section sec in doc.Sections)
{
foreach (HeaderFooter fot in sec.Footers)
{
fot.Range.Find.Execute(FindText: loc.Key, ReplaceWith: loc.Value,
Replace: WdReplace.wdReplaceAll);
}
}