把Doc文档转换成rtf格式 [C#]

先在项目引用里添加上对Microsoft Word 9.0 object library的引用。

using System;

namespace DocConvert

{  class DoctoRtf  {   static void Main()   {

   //创建一个word的实例   Word.Application newApp = new Word.Application();

   // 指定源文件和目标文件   object Source="c://abc//Source.doc";   object Target="c://abc//Target.rtf";

   object Unknown =Type.Missing;

   // 打开要转换的Word文件   newApp.Documents.Open(ref Source,ref Unknown,     ref Unknown,ref Unknown,ref Unknown,     ref Unknown,ref Unknown,ref Unknown,     ref Unknown,ref Unknown,ref Unknown,     ref Unknown );

   // 指定文档的类型   object format = Word.WdSaveFormat.wdFormatRTF;

   //改变文档类型   newApp.ActiveDocument.SaveAs(ref Target,ref format,     ref Unknown,ref Unknown,ref Unknown,     ref Unknown,ref Unknown,ref Unknown,     ref Unknown,ref Unknown,ref Unknown);                   

   //关闭word实例   newApp.Quit(ref Unknown,ref Unknown,ref Unknown);

  }  } }