关于C#替换Word文本框中的内容（不使用Bookmark）疑问

来源：互联网发布：java培训班北京编辑：程序博客网时间：2024/06/04 18:27
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       /// <summary>       
       /// 查找并替换文本       
       /// </summary>       
       /// <param name="wordApp"></param>       
       /// <param name="oldStr"></param>       
       /// <param name="newStr"></param>       
       public        void        SearchReplace(       string        oldStr,        string        newStr)       
       {       
                  #region 文字区域       
                  object        replaceAll = WdReplace.wdReplaceAll;       
               
                  wordApp.Selection.Find.ClearFormatting();       
                  wordApp.Selection.Find.Text = oldStr;       
               
                  wordApp.Selection.Find.Replacement.ClearFormatting();       
                  wordApp.Selection.Find.Replacement.Text = newStr;       
               
                  wordApp.Selection.Find.Execute(       
                      ref        missing,        ref        missing,        ref        missing,        ref        missing,        ref        missing,       
                      ref        missing,        ref        missing,        ref        missing,        ref        missing,        ref        missing,       
                      ref        replaceAll,        ref        missing,        ref        missing,        ref        missing,        ref        missing);       
                  #endregion       
               
                  #region 文本框       
                  StoryRanges sr = wordDoc.StoryRanges;       
                  foreach        (Range r        in        sr)       
                  {       
                      Range r1 = r;       
                      if        (WdStoryType.wdTextFrameStory == r.StoryType) //这句话用来判断什么的？      
                      {       
                          do      
                          {       
                              r1.Find.ClearFormatting();       
                              r1.Find.Text = oldStr;       
               
                              r1.Find.Replacement.ClearFormatting();       
                              r1.Find.Replacement.Text = newStr;       
               
                       if (r1.Find.Execute(
                                ref missing, ref missing, ref missing, ref missing, ref missing,
                                ref missing, ref missing, ref missing, ref missing, ref missing,
                                ref replaceAll, ref missing, ref missing, ref missing, ref missing))
                {
                     break;//找到并替换后跳出循环，省点时间
                }
                else
                {
                     r1 = r1.NextStoryRange;
                }        //加上这个if语句可以提高一点效率，但还是比较慢      
                         }        while        (r1 !=        null       );       
                      }       
                  }       
                  #endregion       
       }      
       有哪位高手能解释下这段代码，我目前只会用，不理解，谢谢      