文本乱码问题

1. //提供一种解决C#文本乱码的解决思路
2. //写入使用：
3. string str;
4. str = this.menu.Text;
5. string fname = Application.StartupPath + "\\read.txt";
6. FileInfo finfo = new FileInfo(fname);
7. if (finfo.Exists)
8. {
9. finfo.Delete();
10. }
11. FileStream fs = new FileStream(fname,FileMode.CreateNew);
12. StreamWriter sw = new StreamWriter(fs,Encoding.GetEncoding("GB2312"));
13. //开始写入
14. sw.Write(str);
15. //清空缓冲区
16. sw.Flush();
17. //关闭流
18. sw.Close();
19. fs.Close();
20. //读取采用：
21. string str;
22. StreamReader sr = new StreamReader(Application.StartupPath + "\\read.txt", Encoding.Default);
24. str = sr.ReadToEnd().ToString();
25. sr.Close();