How to Delete CustomXmlPart from .docx

Question

Let's say I have 2 CustomXmlParts within a document. (So my .docx package contains item1.xml and item2.xml, both of different schema types)   I only want to delete one of them.  I've found a way to delete all CustomXmlParts, but how can I just delete the one I want to remove? 

 

 

//This removes all pieces, but I only want to remove the one containing a certain root element

using (WordprocessingDocument wordDoc = WordprocessingDocument.Open(documentOrig, true))

{

 

   MainDocumentPart mainPart = wordDoc.MainDocumentPart;

   if (mainPart.CustomXmlParts != null)

   {

      mainPart.DeleteParts(mainPart.CustomXmlParts);

   }

 

}

 

Answer 1

 

I am not sure of a straighforward way to do this but if you have the Id of the CustomXml Properties part (defined in the CustomXml rels file) you can try something like this:

 

Code Snippet

IEnumerable<CustomXmlPart> _customParts = _mPart.CustomXmlParts;

foreach (CustomXmlPart _customPart in _customParts)

{

// Get the Id of the CustomXml Properties file

string _partId = _mPart.GetIdOfPart(_customPart.CustomXmlPropertiesPart);

if (_partId.Equals("PARTIDTODELETE"))

_mPart.DeletePart(_customPart);

}

 

 

 

 

 

 

 

 

 

Answer 2

Cool.  I really appreciate your replies. The way I found to do it follows:

 

MainDocumentPart mainPart = wordDoc.MainDocumentPart;

string searchString = "//someearchpath";

foreach (CustomXmlPart part in mainPart.CustomXmlParts) {

 

    XmlDocument customPropsDoc = new XmlDocument();

    customPropsDoc.Load(part.GetStream());

    XmlNode xn = customPropsDoc.SelectSingleNode(searchString, NamespaceManager);

     if (xn != null)

     {

         list.Add(part);

     }

 

}

 

foreach (CustomXmlPart del in list)

{

    mainPart.DeletePart(del);

}