http://www.cnblogs.com/Johnny_Z/archive/2011/09/12/2174148.html
有關streamWriter.BaseStream.Seek()的描述,查看http://blog.csdn.net/zhuyu19911016520/article/details/46502857
http://www.cnblogs.com/Johnny_Z/archive/2011/09/12/2174148.html
有關streamWriter.BaseStream.Seek()的描述,查看http://blog.csdn.net/zhuyu19911016520/article/details/46502857