http://msdn.microsoft.com/zh-cn/library/system.datetime.toshorttimestring(v=VS.85)
// This code example demonstrates the DateTime.ToLongDateString(), //
// DateTime.ToLongTimeString(), DateTime.ToShortDateString(), and //
// DateTime.ToShortTimeString() methods. using System; using
// System.Threading; using System.Globalization; class Sample { public
// static void Main() { string msg1 =
// "The date and time patterns are defined in the DateTimeFormatInfo \n"
// + "object associated with the current thread culture.\n"; //
// Initialize a DateTime object.
// Console.WriteLine("Initialize the DateTime object to May 16, 2001 3:02:15 AM.\n");
// DateTime myDateTime = new System.DateTime(2001, 5, 16, 3, 2, 15); //
// Identify the source of the date and time patterns.
// Console.WriteLine(msg1); // Display the name of the current culture.
// CultureInfo ci = Thread.CurrentThread.CurrentCulture;
// Console.WriteLine("Current culture: \"{0}\"\n", ci.Name); // Display
// the long date pattern and string.
// Console.WriteLine("Long date pattern: \"{0}\"",
// ci.DateTimeFormat.LongDatePattern);
// Console.WriteLine("Long date string: \"{0}\"\n",
// myDateTime.ToLongDateString()); // Display the long time pattern and
// string. Console.WriteLine("Long time pattern: \"{0}\"",
// ci.DateTimeFormat.LongTimePattern);
// Console.WriteLine("Long time string: \"{0}\"\n",
// myDateTime.ToLongTimeString()); // Display the short date pattern and
// string. Console.WriteLine("Short date pattern: \"{0}\"",
// ci.DateTimeFormat.ShortDatePattern);
// Console.WriteLine("Short date string: \"{0}\"\n",
// myDateTime.ToShortDateString()); // Display the short time pattern
// and string. Console.WriteLine("Short time pattern: \"{0}\"",
// ci.DateTimeFormat.ShortTimePattern);
// Console.WriteLine("Short time string: \"{0}\"\n",
// myDateTime.ToShortTimeString()); } } /* This code example produces
// the following results: Initialize the DateTime object to May 16, 2001
// 3:02:15 AM The date and time patterns are defined in the
// DateTimeFormatInfo object associated with the current thread culture.
// Current culture: "en-US" Long date pattern: "dddd, MMMM dd, yyyy"
// Long date string: "Wednesday, May 16, 2001" Long time pattern:
// "h:mm:ss tt" Long time string: "3:02:15 AM" Short date pattern:
// "M/d/yyyy" Short date string: "5/16/2001" Short time pattern:
// "h:mm tt" Short time string: "3:02 AM" */