将PPT&WORD&EXCEL转换成html格式

 public static void PptToHtmlFile(string PptFilePath)
    {
        Microsoft.Office.Interop.PowerPoint.Application ppt = new Microsoft.Office.Interop.PowerPoint.Application();
        Microsoft.Office.Interop.PowerPoint.Presentation pptFile = null;
        try
        {
            //获得html文件名
            string htmlFileName = PptFilePath.Substring(0, PptFilePath.LastIndexOf(".")) + ".html";
            //打开一个ppt文件
            pptFile = ppt.Presentations.Open(PptFilePath, Microsoft.Office.Core.MsoTriState.msoTrue,
                Microsoft.Office.Core.MsoTriState.msoCTrue, Microsoft.Office.Core.MsoTriState.msoFalse);
            //转换成html格式
            pptFile.SaveAs(htmlFileName, Microsoft.Office.Interop.PowerPoint.PpSaveAsFileType.ppSaveAsHTML,
                Microsoft.Office.Core.MsoTriState.msoCTrue);
        }
        finally
        {
            if (pptFile != null)
            {
                pptFile.Close();
            }
            ppt.Quit();
            GC.Collect();
        }
    }

     <summary>
     将Excel文件转换成HTML格式
     </summary>
     <param name="ExcelFilePath">Excel文件路径</param>
    public static void ExcelToHtmlFile(string ExcelFilePath)
    {
        Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
        Microsoft.Office.Interop.Excel.Workbook oBook = null;
         缺省参数
        object Unknown = Type.Missing;
        try
        {
            目标html文件路径
            object Target = ExcelFilePath.Substring(0, ExcelFilePath.LastIndexOf(".")) + ".html";
            为了保险,只读方式打开
            object readOnly = true;
             指定另存为格式(html)
            object format = Microsoft.Office.Interop.Excel.XlFileFormat.xlHtml;

            打开Excel文件
            oBook = excelApp.Workbooks.Open(ExcelFilePath, Unknown, readOnly,
                Unknown, Unknown, Unknown, Unknown, Unknown, Unknown,
                Unknown, Unknown, Unknown, Unknown, Unknown, Unknown);

             转换格式
            oBook.SaveAs(Target, format, Unknown, Unknown, Unknown, Unknown,
                 Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange,
                 Unknown, Unknown, Unknown, Unknown, Unknown);
        }
        finally
        {
            if (oBook != null)
            {
                oBook.Close(false, Unknown, Unknown);
            }
            excelApp.Quit();
            GC.Collect();
        }
    }

     <summary>
     将Word文档转换成HTML格式
     </summary>
     <param name="WordFilePath">Word文档格式</param>
    public static void WordToHtmlFile(string WordFilePath)
    {
        Microsoft.Office.Interop.Word.Application newApp = new Microsoft.Office.Interop.Word.Application();
        Microsoft.Office.Interop.Word.Document doc = null;
         缺省参数
        object Unknown = Type.Missing;
        try
        {
             指定原文件和目标文件
            object Source = WordFilePath;
            object Target = WordFilePath.Substring(0, WordFilePath.LastIndexOf(".")) + ".html";
            为了保险,只读方式打开
            object readOnly = true;
             指定另存为格式(html)
            object format = Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatHTML;

             打开doc文件
            doc = newApp.Documents.Open(ref Source, ref Unknown, ref readOnly,
                ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown,
                ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown);

             转换格式
            doc.SaveAs(ref Target, ref format,
                ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown,
                ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown, ref Unknown);
        }
        finally
        {
            if (doc != null)
            {
                 关闭文档和Word程序
                doc.Close(ref Unknown, ref Unknown, ref Unknown);
            }
            newApp.Quit(ref Unknown, ref Unknown, ref Unknown);
            GC.Collect();
        }
    }