Word的读取

using Microsoft.Office;
using Microsoft.Office.Interop.Word;
using Microsoft.Office.Interop.PowerPoint;
using System.IO;   

上面是要添加的引用-------------------------------------------------------------------

word要在工程引用中引用！！！！

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     /// <summary>
        /// 从Word里读取数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnReadWord_Click(object sender, EventArgs e)
        {
            string filename = @"C:\Documents and Settings\Administrator\桌面\代码文档.doc";
            this.txtAboutUs.Text = Doc2Text(filename);

        }
        /// <summary>
        /// 返回Word的内容
        /// </summary>
        /// <param name="docFileName"></param>
        /// <returns></returns>
        public string Doc2Text(string docFileName)
        {
            //实例化COM
            Microsoft.Office.Interop.Word.ApplicationClass wordApp = new Microsoft.Office.Interop.Word.ApplicationClass();
            object fileobj = docFileName;
            object nullobj = System.Reflection.Missing.Value;
            //打开指定文件（不同版本的COM参数个数有差异，一般而言除第一个外都用nullobj就行了）
            Microsoft.Office.Interop.Word.Document doc = wordApp.Documents.Open(ref fileobj, ref nullobj, ref nullobj,
                ref nullobj, ref nullobj, ref nullobj,
                ref nullobj, ref nullobj, ref nullobj,
                ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj, ref nullobj
                );
            //取得doc文件中的文本
            string outText = doc.Content.Text;
            //关闭文件
            doc.Close(ref nullobj, ref nullobj, ref nullobj);
            //关闭COM
            wordApp.Quit(ref nullobj, ref nullobj, ref nullobj);
            //返回
            return outText;
        }