Enterprise Library Logging App Block的时区问题

LAB记录的日志里timestamp总是UTC时间，很是郁闷，只能把里面的DateTime.UtcNow改成DateTime.Now，再编译引用。

今天偶然看见http://blogs.msdn.com/tomholl/archive/2006/01/22/516055.aspx讲到可以修改TimeStampToken 的FormatToken方法：

/// <summary> /// Formats the timestamp property with the specified date time format string. /// </summary> /// <param name="tokenTemplate">Date time format string. Prefix with 'local:' to convert to local time.</param> /// <param name="log">Log entry containing the timestamp.</param> /// <returns>Returns the formatted time stamp.</returns> public override string FormatToken(string tokenTemplate, LogEntry log) { if (tokenTemplate.Equals("local", System.StringComparison.InvariantCultureIgnoreCase)) { System.DateTime localTime = log.TimeStamp.ToLocalTime(); return localTime.ToString(); } else if (tokenTemplate.StartsWith("local:", System.StringComparison.InvariantCultureIgnoreCase)) { string formatTemplate = tokenTemplate.Substring(6); System.DateTime localTime = log.TimeStamp.ToLocalTime(); return localTime.ToString(formatTemplate, CultureInfo.CurrentCulture); } else { return log.TimeStamp.ToString(tokenTemplate, CultureInfo.CurrentCulture); } }

然后，

Timestamp: {timestamp}
Timestamp local: {timestamp(local)}
Timestamp F: {timestamp(F)}
Timestamp local:F {timestamp(local:F)}

结果：

Timestamp: 1/23/2006 2:24:18 AM
Timestamp local: 1/22/2006 6:24:18 PM
Timestamp F: Monday, January 23, 2006 2:24:18 AM
Timestamp local:F Sunday, January 22, 2006 6:24:18 PM

马上去源码里看看，晕，原来源码里早就是这段了，那为嘛没人告诉我可以这样用呢？连配置工具里也没这标签啊！

PS:这次看的源码版本是Enterprise Library 3.1 - May 2007，不知道后来版本配置工具里有没有。