.net操作word lib DocX

http://cathalscorner.blogspot.hk/2010/06/cathal-why-did-you-create-docx.html

using (DocX document = DocX.Load(@"C:\source\3.docx"))
{
　　Formatting mFormatting=new Formatting();

　　document.ReplaceText("«bbbb»", "bbbaaaaaaaaaaa",

　　false, RegexOptions.Singleline, null, null, MatchFormattingOptions.ExactMatch, true, true);

　　document.Save();

}