如何使用Open XML和C#更改单个段落或页面的方向？

我正在使用C#和Open XML SDK生成word文档.我想将一些段落及其包含页面的方向更改为横向,同时保持其他段落的纵向方向.
我尝试了一些解决方案,但他们没有实现我想要的东西,而是所有页面的方向都被改为横向除了第一个.这些解决方案包括
– 将SectionProperties添加到我想要更改的段落中
它对景观的定位：

WordprocessingDocument WordDocument = WordprocessingDocument.Open(ReportFile,true)
Paragraph paragraph =  new Paragraph(new ParagraphProperties(
               new SectionProperties( new PageSize() 
               { Width = (UInt32Value)15840U,Height = (UInt32Value)12240U,Orient = PageOrientationValues.Landscape })));
WordDocument.MainDocumentPart.Document.Body.Append(paragraph);

– 将新主体添加到主文档并将段落附加到主文档：

WordprocessingDocument WordDocument = WordprocessingDocument.Open(ReportFile,true)    
Body body = new Body();          
Paragraph paragraph =  new Paragraph(new ParagraphProperties(
               new SectionProperties( new PageSize() 
               { Width = (UInt32Value)15840U,Orient = PageOrientationValues.Landscape })));
body.Append(paragraph);
WordDocument.MainDocumentPart.Document.Append(body);

– 在主文档中添加一个新Body并直接向其添加SectionProprties：

WordprocessingDocument WordDocument = WordprocessingDocument.Open(ReportFile,true)  
Body body = new Body();
Paragraph paragraph = new Paragraph();
SectionProperties sectionProp = new SectionProperties(new PageSize() { Width = (UInt32Value)15840U,Orient = PageOrientationValues.Landscape });
body.Append(paragraph);
body.Append(sectionProp);
WordDocument.MainDocumentPart.Document.Append(body);

那么,有没有办法改变单个段落/页面的方向？

doc.MainDocumentPart.Document.Body.Append(
    new Paragraph(
        new ParagraphProperties(
            new SectionProperties(
                new PageSize() { Width = (UInt32Value)12240U,Height = (UInt32Value)15840U,Orient = PageOrientationValues.Landscape },new PageMargin() { Top = 720,Right = Convert.ToUInt32(rightmargin * 1440.0),Bottom = 360,Left = Convert.ToUInt32(leftmargin * 1440.0),Header = (UInt32Value)450U,Footer = (UInt32Value)720U,Gutter = (UInt32Value)0U }))));

doc.MainDocumentPart.Document.Body.Append(
    new Paragraph(
        new ParagraphProperties(
            new SectionProperties(
                new PageSize() { Width = (UInt32Value)12240U,Height = (UInt32Value)15840U },Gutter = (UInt32Value)0U }))));