private void Button_Click(object sender, RoutedEventArgs e)        {            string fileName = @"C:\Users\Admin\Desktop\322.docx";            XWPFDocument document = null;            try            {                using (FileStream file = new FileStream(fileName, FileMode.Open, FileAccess.Read))                {                    document = new XWPFDocument(file);                }                using (FileStream stream = File.OpenRead(fileName))                {                    XWPFDocument doc = new XWPFDocument(stream);                    //遍历段落                    foreach (var para in doc.Paragraphs)                    {                        ReplaceKey(para);                    }                    //遍历表格                    var tables = doc.Tables;                    foreach (var table in tables)                    {                        foreach (var row in table.Rows)                        {                            foreach (var cell in row.GetTableCells())                            {                                foreach (var para in cell.Paragraphs)                                {                                    ReplaceKey(para);                                }                            }                        }                    }                    using (MemoryStream ms = new MemoryStream())                    {                        doc.Write(ms);                        using (FileStream fsWrite = new FileStream(@"D:\1.txt", FileMode.Append))                        {                            fsWrite.Write(ms.ToArray(), 0, ms.ToArray().Length);                        };                    }                }            }            catch (Exception ex)            {                Console.WriteLine(string.Format("文件{0}打开失败，错误：{1}", new string[] { fileName, ex.ToString() }));            }        }        private void ReplaceKey(XWPFParagraph para)        {            string text = para.ParagraphText;            var runs = para.Runs;            string styleid = para.Style;            for (int i = 0; i < runs.Count; i++)            {                var run = runs[i];                text = run.ToString();                runs[i].SetText(text+2, 0);            }        }