Example The following sample demonstrates different ways of formatting a DateTime value using the invariant DateTimeFormatInfo. [C#] using System; using System.Globalization; public class MainClass { public static void Main(string[] args) { DateTime dt = DateTime.Now; String[] format = { "d", "D", "f", "F", "g", "G", "m", "r", "s", "t", "T", "u", "U", "y", "dddd, MMMM dd yyyy", "ddd, MMM d \"'\"yy", "dddd, MMMM dd", "M/yy", "dd-MM-yy", }; String date; for (int i = 0; i < format.Length; i++) { date = dt.ToString(format[i], DateTimeFormatInfo.InvariantInfo); Console.WriteLine(String.Concat(format[i], " :" , date)); } /** Output. * * d :08/17/2000 * D :Thursday, August 17, 2000 * f :Thursday, August 17, 2000 16:32 * F :Thursday, August 17, 2000 16:32:32 * g :08/17/2000 16:32 * G :08/17/2000 16:32:32 * m :August 17 * r :Thu, 17 Aug 2000 23:32:32 GMT * s :2000-08-17T16:32:32 * t :16:32 * T :16:32:32 * u :2000-08-17 23:32:32Z * U :Thursday, August 17, 2000 23:32:32 * y :August, 2000 * dddd, MMMM dd yyyy :Thursday, August 17 2000 * ddd, MMM d "'"yy :Thu, Aug 17 '00 * dddd, MMMM dd :Thursday, August 17 * M/yy :8/00 * dd-MM-yy :17-08-00 */ } } [C++] #using using namespace System; using namespace System::Globalization; void main () { DateTime dt = DateTime::Now; String* format[] = { L"d", L"D", L"f", L"F", L"g", L"G", L"m", L"r", L"s", L"t", L"T", L"u", L"U", L"y", L"dddd, MMMM dd yyyy", L"ddd, MMM d \"'\"yy", L"dddd, MMMM dd", L"M/yy", L"dd-MM-yy", }; String * date; for (int i = 0; i < format->Length; i++) { date = dt.ToString(format[i], DateTimeFormatInfo::InvariantInfo); Console::WriteLine(String::Concat(format[i], L" :" , date)); } /** Output. * * d :08/17/2000 * D :Thursday, August 17, 2000 * f :Thursday, August 17, 2000 16:32 * F :Thursday, August 17, 2000 16:32:32 * g :08/17/2000 16:32 * G :08/17/2000 16:32:32 * m :August 17 * r :Thu, 17 Aug 2000 23:32:32 GMT * s :2000-08-17T16:32:32 * t :16:32 * T :16:32:32 * u :2000-08-17 23:32:32Z * U :Thursday, August 17, 2000 23:32:32 * y :August, 2000 * dddd, MMMM dd yyyy :Thursday, August 17 2000 * ddd, MMM d "'"yy :Thu, Aug 17 '00 * dddd, MMMM dd :Thursday, August 17 * M/yy :8/00 * dd-MM-yy :17-08-00 */ }