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首先将word文档路径保存在List<string>中，新建一个word文档对象并循环List打开对应的word，之后拷贝文档，在新文档中粘贴并且粘贴前先插入换行符。最后保存新文档，并销毁进程。

protected void Button1_Click(object sender, EventArgs e)    

　　{    

　　// object worPath = @"C:\";    

　　object path = @"C:\Test合并word.doc";    

　　List<string> pathList = new List<string>();    

　　pathList.Add(@"C:\word1.doc");    

　　pathList.Add(@"C:\word2.doc");    

　　object objDocType = WdDocumentType.wdTypeDocument;    

　　object type = WdBreakType.wdSectionBreakContinuous;    

　　Application wordApp; //Word应用程序变量    

　　Document newWordDoc; //Word文档变量    

　　object readOnly = false;    

　　object isVisible = false;    

　　wordApp = new ApplicationClass(); //初始化    

　　//由于使用的是COM库，因此有许多变量需要用Missing.Value代替    

　　Object Nothing = Missing.Value;    

　　//wordDoc = wordApp.Documents.Add(ref Nothing, ref Nothing, ref Nothing, ref Nothing);    

　　newWordDoc = wordApp.Documents.Add(ref Nothing, ref Nothing, ref Nothing, ref Nothing);    

　　for (int i = 0; i < pathList.Count; i++)    

　　{    

　　Document openWord;    

　　object obj = pathList[i];    

　　openWord = wordApp.Documents.Open(ref obj, ref Nothing, ref readOnly, ref Nothing,    

　　ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing,    

　　ref Nothing, ref isVisible, ref Nothing, ref Nothing, ref Nothing, ref Nothing);    

　　openWord.Select();    

　　openWord.Sections[1].Range.Copy();    

　　//string str= Clipboard.GetText(TextDataFormat.Text);    

　　// str+="\n\n";    

　　// Clipboard.SetData(DataFormats.Text, str);    

　　object start = 0;    

　　Range newRang = newWordDoc.Range(ref start, ref start);    

　　newWordDoc.Sections[1].Range.InsertBreak(ref type);//插入换行符    

　　newWordDoc.Sections[1].Range.PasteAndFormat(WdReco veryType.wdPasteDefault);    

　　openWord.Close(ref Nothing, ref Nothing, ref Nothing);    

　　}    

　　object format = WdSaveFormat.wdFormatDocument;//.wdFormatDocumentD efault;    

　　//将wordDoc文档对象的内容保存为DOCX文档    

　　newWordDoc.SaveAs(ref path, ref format, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing, ref Nothing);    

　　//关闭wordDoc文档对象    

　　newWordDoc.Close(ref Nothing, ref Nothing, ref Nothing);    

　　//关闭wordApp组件对象    

　　wordApp.Quit(ref Nothing, ref Nothing, ref Nothing);    

　　Console.WriteLine(path + " 创建完毕！");    

　　Console.ReadLine();    

　　}    

作者：黄聪