using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.IO.Packaging;
using System.Xml;

namespace ReadDocx
{
    class Program
    {
        static void Main(string[] args)
        {
            string path = "a.docx";
            using (Package package = Package.Open(path))
            {
                Uri docxUri = new Uri("/word/document.xml", UriKind.Relative);

                PackagePart docxPart = package.GetPart(docxUri);

                XmlDocument docxXmlDocument = new XmlDocument();

                docxXmlDocument.Load(docxPart.GetStream());

                Console.WriteLine(docxXmlDocument.InnerText.ToString());

            }
        }
    }
}

记得要导入WindowsBase引用！！！

  from now to Brilliance