วิธีลบหน้าว่างใน Word โดยใช้ C#

Document originalDoc = new Document("WordFileWithBlankPages.docx");

ArrayList blankPages = new ArrayList();
blankPages.Add(-1);

int totalPages = originalDoc.PageCount;

for (int i = 0; i < totalPages; i++)
{
    Document singlePageDoc = originalDoc.ExtractPages(i, 1);
    int shapesCounter = 0;
    string pageText = "";

    foreach (Section docSection in singlePageDoc.Sections)
    {
        pageText += docSection.Body.ToString(SaveFormat.Text);
        shapesCounter += docSection.Body.GetChildNodes(NodeType.Shape, true).Count;
    }

    if (string.IsNullOrEmpty(pageText.Trim()) && shapesCounter == 0)
        blankPages.Add(i);
}

blankPages.Add(totalPages);

Document finalDoc = (Document)originalDoc.Clone(false);
finalDoc.RemoveAllChildren();

for (int i = 1; i < blankPages.Count; i++)
{
    int index = (int)blankPages[i - 1] + 1;
    int count = (int)blankPages[i] - index;

    if (count > 0)
        finalDoc.AppendDocument(originalDoc.ExtractPages(index, count), ImportFormatMode.KeepSourceFormatting);
}

finalDoc.Save(@"NonEmptyPages.docx");
System.Console.WriteLine("ลบหน้าว่างสำเร็จแล้ว.");