Console.WriteLine(string.Format("ToLongDateString:{0}", DateTime.Now.ToLongDateString()));
Console.WriteLine(string.Format("ToLongTimeString:{0}", DateTime.Now.ToLongTimeString()));
Console.WriteLine(string.Format("ToOADate:{0}", DateTime.Now.ToOADate()));
Console.WriteLine(string.Format("ToShortDateString:{0}
 
", DateTime.Now.ToShortDateString()));
Console.WriteLine(string.Format("ToShortTimeString:{0}", DateTime.Now.ToShortTimeString()));
Console.WriteLine(string.Format("ToString:{0}", DateTime.Now.ToString()));
Console.WriteLine(string.Format("ToString(\"yyyy - MM - dd HH:mm:ss.ffff\"):{0}", DateTime.Now.ToString("
 
yyyy-MM-dd HH:mm:ss.ffff")));

運行結果：

ToLongDateString:2017年9月21日

ToLongTimeString:16:02:30

ToOADate:42999.6684130671

ToShortDateString:2017/9/21

ToShortTimeString:16:02

ToString:2017/9/21 16:02:30

ToString("yyyy - MM - dd HH:mm:ss.ffff"):2017-09-21 16:02:30.8921

DateTime格式轉換結果