C#實現WORD文檔的內容復制和替換

最近一個項目的需求是要根據一個Word文檔的模板，用記錄集的具體內容替換掉裡面的標識字符的內容，生成不同的文檔。 分兩步：

第一：復制模板的內容到一個Document對象裡 從源DOC文檔復制內容返回一個Document類#region 從源DOC文檔復制內容返回一個Document類
        /// <summary>
        /// 從源DOC文檔復制內容返回一個Document類
        /// </summary>
        /// <param name="sorceDocPath">源DOC文檔路徑</param>
        /// <returns>Document</returns>
        protected Document copyWordDoc(object sorceDocPath)    
        {
                object objDocType = WdDocumentType.wdTypeDocument;
                object type = WdBreakType.wdSectionBreakContinuous;

                //Word應用程序變量    
                Application wordApp;
                //Word文檔變量
                Document newWordDoc;

                object readOnly = false;
                object isVisible = false;

                //初始化
                //由於使用的是COM庫，因此有許多變量需要用Missing.Value代替
                wordApp = new ApplicationClass();

                Object Nothing = System.Reflection.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);

                Document openWord;
                openWord = wordApp.Documents.Open(ref sorceDocPath, ref Nothing, ref readOnly, ref Nothing, ref Nothing, ref Nothing, ref Nothing,