CustomXmlPart Class

public class CustomXmlPart

Public Class CustomXmlPart

public ref class CustomXmlPart

type CustomXmlPart =  class end

Document doc = new Document();

// Construct an XML part that contains data and add it to the document's collection
// Once the "Developer" tab in Mircosoft Word is enabled,
// we can find elements from this collection as well as a couple defaults in the "XML Mapping Pane" 
string xmlPartId = Guid.NewGuid().ToString("B");
string xmlPartContent = "<root><text>Hello, World!</text></root>";
CustomXmlPart xmlPart = doc.CustomXmlParts.Add(xmlPartId, xmlPartContent);

// The data we entered resides in these variables
Assert.AreEqual(Encoding.ASCII.GetBytes(xmlPartContent), xmlPart.Data);
Assert.AreEqual(xmlPartId, xmlPart.Id);

// XML parts can be referenced by collection index or GUID
Assert.AreEqual(xmlPart, doc.CustomXmlParts[0]);
Assert.AreEqual(xmlPart, doc.CustomXmlParts.GetById(xmlPartId));

// Once the part is created, we can add XML schema associations like this
xmlPart.Schemas.Add("http://www.w3.org/2001/XMLSchema");

// We can also clone parts and insert them into the collection directly
CustomXmlPart xmlPartClone = xmlPart.Clone();
xmlPartClone.Id = Guid.NewGuid().ToString("B");
doc.CustomXmlParts.Add(xmlPartClone);

Assert.AreEqual(2, doc.CustomXmlParts.Count);

// Iterate through collection with an enumerator and print the contents of each part
using (IEnumerator<CustomXmlPart> enumerator = doc.CustomXmlParts.GetEnumerator())
{
    int index = 0;
    while (enumerator.MoveNext())
    {
        Console.WriteLine($"XML part index {index}, ID: {enumerator.Current.Id}");
        Console.WriteLine($"\tContent: {Encoding.UTF8.GetString(enumerator.Current.Data)}");
        index++;
    }
}

// XML parts can be removed by index
doc.CustomXmlParts.RemoveAt(1);

Assert.AreEqual(1, doc.CustomXmlParts.Count);

// The XML part collection itself can be cloned also
CustomXmlPartCollection customXmlParts = doc.CustomXmlParts.Clone();

// And all elements can be cleared like this
customXmlParts.Clear();

// Create a StructuredDocumentTag that will display the contents of our part,
// insert it into the document and save the document
StructuredDocumentTag sdt = new StructuredDocumentTag(doc, SdtType.PlainText, MarkupLevel.Block);
sdt.XmlMapping.SetMapping(xmlPart, "/root[1]/text[1]", "");

doc.FirstSection.Body.AppendChild(sdt);

doc.Save(ArtifactsDir + "StructuredDocumentTag.CustomXml.docx");