Convert DateTime to custom Date format

Question

I have a DateTime object with value as 2011-08-11T01:03:29+00:00 which is returned from a database.

How can I convert this to mm/dd/yyyy format where as the end result type should be DateTime object only, not string?

Answer 1

A DateTime object is only the numerical representation of the date as 'ticks' from a constant start time (for example, January 1, 0000). It is not the string representation. To get a string representation, you do ToString() on the object.

To convert your DateTime to a string for your custom format, use

myDateTime.ToString("MM/dd/yyyy");

See http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx for complete details about DateTime.ToString() custom formats.

See http://msdn.microsoft.com/en-us/library/system.datetime.aspx :

"Internally, all DateTime values are represented as the number of ticks (the number of 100-nanosecond intervals) that have elapsed since 12:00:00 midnight, January 1, 0001. The actual DateTime value is independent of the way in which that value appears when displayed in a user interface element or when written to a file."

Answer 2

Pass it as a string and parse it

  format = "mm/dd/yyyy";
  try {
     result = DateTime.ParseExact(yourDate.ToString(format), format, provider);
  }
  catch (FormatException) {
     Console.WriteLine("{0} is not in the correct format.", dateString);
  }

MSDN has all answers

Answer 3

DateTime有一个叫ToLongDateString( ）和ToShortDateString()函数（我相信那些是正确的函数名），而short函数就是你想做的。