日期格式，完整月日年/日月年

輸出格式為日期
DateTime.Now.ToString("MM/dd/yyyy").ToString(CultureInfo.GetCultureInfo("en-GB"))
"08/16/2013"
 DateTime.Now.ToString("MMMM/dd/yyyy", CultureInfo.GetCultureInfo("en-GB"))
"August/16/2013"
 DateTime.Now.ToString("MMMM-dd-yyyy", CultureInfo.GetCultureInfo("en-GB"))
"August-16-2013"
 DateTime.Now.ToString("MMMM dd yyyy", CultureInfo.GetCultureInfo("en-GB"))
"August 16 2013"...


輸出格式為字串
DateTime.Now.ToString("D", CultureInfo.GetCultureInfo("en-GB"))
"16 August 2013"

不難，但要用的時候很容易臨時想不起來XD