AddCopy

public List AddCopy(List srcList)

public void PrintOutAllLists()
{
    Document srcDoc = new Document(MyDir + "Rendering.docx");

    Document dstDoc = new Document();
    DocumentBuilder builder = new DocumentBuilder(dstDoc);

    foreach (List srcList in srcDoc.Lists)
    {
        List dstList = dstDoc.Lists.AddCopy(srcList);
        AddListSample(builder, dstList);
    }

    dstDoc.Save(ArtifactsDir + "Lists.PrintOutAllLists.docx");
}

private static void AddListSample(DocumentBuilder builder, List list)
{
    builder.Writeln("Sample formatting of list with ListId:" + list.ListId);
    builder.ListFormat.List = list;
    for (int i = 0; i < list.ListLevels.Count; i++)
    {
        builder.ListFormat.ListLevelNumber = i;
        builder.Writeln("Level " + i);
    }

    builder.ListFormat.RemoveNumbers();
    builder.Writeln();
}

Document doc = new Document();

// A list allows us to organize and decorate sets of paragraphs with prefix symbols and indents.
// We can create nested lists by increasing the indent level. 
// We can begin and end a list by using a document builder's "ListFormat" property. 
// Each paragraph that we add between a list's start and the end will become an item in the list.
// Create a list from a Microsoft Word template, and customize its first list level.
List list1 = doc.Lists.Add(ListTemplate.NumberArabicParenthesis);
list1.ListLevels[0].Font.Color = Color.Red;
list1.ListLevels[0].Alignment = ListLevelAlignment.Right;

// Apply our list to some paragraphs.
DocumentBuilder builder = new DocumentBuilder(doc);

builder.Writeln("List 1 starts below:");
builder.ListFormat.List = list1;
builder.Writeln("Item 1");
builder.Writeln("Item 2");
builder.ListFormat.RemoveNumbers();

// We can add a copy of an existing list to the document's list collection
// to create a similar list without making changes to the original.
List list2 = doc.Lists.AddCopy(list1);
list2.ListLevels[0].Font.Color = Color.Blue;
list2.ListLevels[0].StartAt = 10;

// Apply the second list to new paragraphs.
builder.Writeln("List 2 starts below:");
builder.ListFormat.List = list2;
builder.Writeln("Item 1");
builder.Writeln("Item 2");
builder.ListFormat.RemoveNumbers();

doc.Save(ArtifactsDir + "Lists.RestartNumberingUsingListCopy.docx");