Edit Word bookmark changes the font

Question

I have a C# program that generates documents using OpenXml. It replaces bookmarks with values using the following method :

private void FillBookmark(BookmarkStart bookmark, string value)
{
    var text = new Text(value);
    bookmark.RemoveAllChildren();

    IEnumerable<OpenXmlElement> elementsAfter = bookmark.ElementsAfter();
    IEnumerable<OpenXmlElement> insideBookmark = elementsAfter.TakeWhile(element => !(element is BookmarkEnd));
    foreach (OpenXmlElement element in insideBookmark)
    {
        element.RemoveAllChildren();
    }
    OpenXmlElement previousSibling = bookmark.PreviousSibling();
    while (previousSibling is BookmarkStart || previousSibling is BookmarkEnd)
    {
        previousSibling = previousSibling.PreviousSibling();
    }
    var container = new Run(text);
    previousSibling.AppendChild(container);
}

In this particular word document, the font used is Raleway. There are several bookmarks and after the execution of this method, two bookmarks are using the Calibri font. I tried to rewrite theses bookmarks to be sure they are in Raleway but they continue to change to Calibri.

How is this possible ?

Answer 1

First of all your code creates new element without previous RunProperties. So, you get something like next snippet:

<w:r>
    <w:t>valuexX</w:t>
</w:r>

instead of it:

<w:r w:rsidRPr="00DE66A4">
    <w:rPr>
        <w:rFonts w:ascii="Algerian" w:hAnsi="Algerian" />
            <w:lang w:val="en-US" />
    </w:rPr>
    <w:t>6</w:t>               
</w:r>  

You can copy any properties like this:

private void FillBookmark(BookmarkStart bookmark, string value)
{
  var text = new Text(value);
  bookmark.RemoveAllChildren();

  IEnumerable<OpenXmlElement> elementsAfter = bookmark.ElementsAfter();
  IEnumerable<OpenXmlElement> insideBookmark = elementsAfter.TakeWhile(element => !(element is BookmarkEnd));
  foreach (OpenXmlElement element in insideBookmark)
  {
    element.RemoveAllChildren();
  }
  OpenXmlElement previousSibling = bookmark.PreviousSibling();
  while (previousSibling is BookmarkStart || previousSibling is BookmarkEnd)
  {
    previousSibling = previousSibling.PreviousSibling();
  }

  //Get previous font.
  var runProperties = previousSibling.GetFirstChild<ParagraphMarkRunProperties>().GetFirstChild<RunFonts>();
  //var runProperties = previousSibling.GetFirstChild<RunProperties>(); - if its simple element.

  // Clone.
  var newProperty = (RunFonts)runProperties.Clone();

  // Create container with properties.
  var container = new Run(text)
  {
    RunProperties = new RunProperties() { RunFonts = newProperty }
  };

  previousSibling.AppendChild(container);
}