使用“Interop.Word”DLL重复旧段落下方文档中的段落

Question

使用Microsoft.Office.Interop.Word DLL我想找到特定的段落，并在旧段落下方的文档中重复该段落。在这里，我能够使用给定的string (or) text从所选文档中提取段落。

以下是代码块：

    private string[] ReadFileContent(Document doc, string Key)
    {                               
       Word::Application WordApp;
       WordApp = new Word.Application();
        List<string> SelectedParagraphs = new List<string>();
        string parac = string.Empty;
        for (int j = 1; j <= doc.Paragraphs.Count; j++) //numeration of paragraphs starts from 1
        {                                
            Microsoft.Office.Interop.Word.Paragraph para = doc.Content.Paragraphs[j];
            int cSent = para.Range.Sentences.Count;
            string a;
            for (int l = 1; l <= cSent; l++)
            {
                Microsoft.Office.Interop.Word.Range sent = para.Range.Sentences[l];
                a = sent.Text.ToString();
                if (a.IndexOf(Key)>-1)
                {
                    parac = parac+ "," + j.ToString(); 
                }
            }
        }
        parac = parac.TrimStart(',');
        string[] ParaArray = parac.Split(',');
        string[] Result = new string[ParaArray.Count()];

        for (int m = 0; m < ParaArray.Count(); m++)
        {
            int i = 0;
          //StringBuilder sb = new StringBuilder();

            Microsoft.Office.Interop.Word.Paragraphs DocPar = doc.Paragraphs;
            // Count number of paragraphs in the file
            long parCount = DocPar.Count;
            // Step through the paragraphs
            int paraGraphNum = Convert.ToInt32(ParaArray[m]);

            while (i < parCount)
            {
                i++;
                if (i == paraGraphNum)
                {
                   // sb.Append(DocPar[i].Range.Text);
                    Result[m] = DocPar[i].Range.Text;
                    break;
                }
            }
        }

        return Result;
    }