using C# OpenXml SDK apply strike through for all bullets in MS Word

Question

I need to apply styles to bullets in a MS Word document. I am able to read full docx using OpenXML then apply styles for Paragraphs using Run nodes

This is how I am applying styles at other areas based up on the condition

private void StrikeAndUnderline(Run run)
        {
            if (run.RunProperties == null)
            {
                run.RunProperties = new RunProperties();
            }
            run.RunProperties.Strike = new Strike();
            run.RunProperties.Strike.Val = true;
            run.RunProperties.Underline = new Underline();
            run.RunProperties.Underline.Val = UnderlineValues.Single;
        }

But I don't get a Run property for bullets

<w:p>
  <w:pPr>
    <w:pStyle w:val="ListParagraph"/>
    <w:numPr>
      <w:ilvl w:val="0"/>
      <w:numId w:val="1"/>
    </w:numPr>
  </w:pPr>
  <w:r>
    <w:t>Paragraph one.</w:t>
  </w:r>
</w:p>

Answer 1

Based on the explanation @Shelest provided, here is the quick & dirty implementation of striking bullets using OpenXML SDK

public static void ReadAndStrikeBulletsWithOpenXml()
        {
            var sourcePath = @"C:\temp\test.docx";
            var destinationPath = @"C:\temp\new-test.docx";
            File.Copy(sourcePath, destinationPath);
            using (var document = WordprocessingDocument.Open(destinationPath, true))
            {
                Numbering numbering = document.MainDocumentPart.NumberingDefinitionsPart.Numbering;
                var abstractNum = numbering.ChildElements.FirstOrDefault(x => x.LocalName.Equals("abstractNum"));
                if (abstractNum?.ChildElements != null)
                {
                    foreach (var child in abstractNum.ChildElements)
                    {
                        if (child.OuterXml.Contains("<w:lvl"))
                        {
                            XmlDocument levelXml = new XmlDocument();
                            levelXml.LoadXml(child.OuterXml);

                            XmlNamespaceManager namespaceManager = new XmlNamespaceManager(levelXml.NameTable);
                            namespaceManager.AddNamespace("w",
                                "http://schemas.openxmlformats.org/wordprocessingml/2006/main");

                            XmlNode runProperty = levelXml.SelectSingleNode("w:lvl/w:rPr", namespaceManager);
                            if (runProperty == null)
                            {
                                // Need to uncomment this if you prefer to strike all bullets at all levels
                                //child.InnerXml = child.InnerXml +
                                //                 "<w:rPr><w:strike w:val\"1\"/></w:rPr>";
                            }
                            else if (runProperty.InnerXml.Contains("w:strike"))
                            {
                                XmlDocument runXml = new XmlDocument();
                                runXml.LoadXml(runProperty.OuterXml);

                                XmlNamespaceManager runNamespaceManager = new XmlNamespaceManager(runXml.NameTable);
                                runNamespaceManager.AddNamespace("w",
                                    "http://schemas.openxmlformats.org/wordprocessingml/2006/main");

                                XmlNode strikeNode = runXml.SelectSingleNode("w:rPr/w:strike", namespaceManager);
                                if (strikeNode?.Attributes != null)
                                {
                                    if (strikeNode.Attributes["w:val"] == null)
                                    {
                                        // do nothing
                                    }
                                    else if (strikeNode.Attributes["w:val"].Value == "0")
                                    {
                                        child.InnerXml = child.InnerXml.Replace("w:strike w:val=\"0\"", "w:strike w:val=\"1\"");
                                    }
                                }
                            }
                        }
                    }
                }
                document.MainDocumentPart.Document.Save();
                document.Close();
            }
        }