C# 讀取word文檔數據粘貼全部

Word.ApplicationClass wordApp=new ApplicationClass();   object file=path;   object nullobj=System.Reflection.Missing.Value;      Word.Document doc = wordApp.Documents.Open(   ref file, ref nullobj, ref nullobj,    ref nullobj, ref nullobj, ref nullobj,    ref nullobj, ref nullobj, ref nullobj,    ref nullobj, ref nullobj, ref nullobj);   doc.ActiveWindow.Selection.WholeStory();   doc.ActiveWindow.Selection.Copy();   IDataObject data=Clipboard.GetDataObject();   txtFileContent.Text=data.GetData(DataFormats.Text).ToString();   doc.Close();