GMT时间转换

1. /// <summary>
2. /// GMT时间转成本地时间
3. /// </summary>
4. /// <param name="gmt">字符串形式的GMT时间</param>
5. /// <returns></returns>
6. public static DateTime GMT2Local(string gmt)
7. {
8. DateTime dt = DateTime.MinValue;
9. try
10. {
11. string pattern = "";
12. if (gmt.IndexOf("+0") != -1)
13. {
14. gmt = gmt.Replace("GMT", "");
15. pattern = "ddd, dd-MMM-yyyy HH':'mm':'ss zzz";
16. }
17. if (gmt.ToUpper().IndexOf("GMT") != -1)
18. {
19. pattern = "ddd, dd-MMM-yyyy HH':'mm':'ss 'GMT'";
20. }
21. if (pattern != "")
22. {
23. dt = DateTime.ParseExact(gmt, pattern, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.AdjustToUniversal);
24. dt = dt.ToLocalTime();
25. }
26. else
27. {
28. dt = Convert.ToDateTime(gmt);
29. }
30. }
31. catch
32. {
33. }
34. return dt;
35. }