npio操作Word怎样让页眉居中

npio操作Word怎样让页眉居中 求教啊啊啊啊啊啊啊啊啊啊

直接设置页面段落居中headerPara.Format.HorizontalAlignment = HorizontalAlignment.Center;//设置页眉居中，下面是引入的免费版spire.doc.dll到程序的c#例子，用npoi，方法应该类似：

using Spire.Doc;
using Spire.Doc.Documents;
using System.Drawing;
using Spire.Doc.Fields;

namespace AddHeaderAndFooter
{
    class Program
    {
        static void Main(string[] args)
        {
            //创建一个Document类实例，添加section
            Document document = new Document("test.docx");
            Section sec = document.Sections[0];          
            
            //添加页眉、页脚
            HeaderFooter header = sec.HeadersFooters.Header;
            Paragraph headerPara = header.AddParagraph();
            headerPara.Format.HorizontalAlignment = HorizontalAlignment.Center;//设置页眉居中
            HeaderFooter footer = sec.HeadersFooters.Footer;
            Paragraph footerPara = footer.AddParagraph();
            footerPara.Format.HorizontalAlignment = HorizontalAlignment.Center;//设置页脚居中

            //添加文本和图片到页眉，并设置文本格式
            //DocPicture headerImage = headerPara.AppendPicture(Image.FromFile("g.png"));
            TextRange TR = headerPara.AppendText("页眉文字");
            TR.CharacterFormat.FontName = "Andalus";
            TR.CharacterFormat.FontSize = 12;
            TR.CharacterFormat.TextColor = Color.Green;
            TR.CharacterFormat.Bold = false;          
            
            //添加文本到页脚，并设置格式
            TR = footerPara.AppendText("Copyright © 2021  All Rights Reserved.");
            TR.CharacterFormat.Bold = false;
            TR.CharacterFormat.FontSize = 9;            
            
            //保存文档
            document.SaveToFile("output.docx", FileFormat.Docx);
            System.Diagnostics.Process.Start("output.docx");
        }
    }
}

效果图：

img