System.DateTime date1 = System.DateTime.Now;
        System.DateTime date2 = System.DateTime.Now;

 
System.DateTime date2new = date2.AddMinutes(60);

 
Method *                                       Description
Add                                          Adds a timespan value
AddDays                                    Adds a certain number of days
AddHours                              Adds a certain number of hours
AddMilliseconds                    Adds a certain number of Milliseconds
AddMinutes                          Adds a certain number of minutes
AddMonths                            Adds a certain number of months
AddSeconds                               Adds a certain number of seconds
AddTicks                              Adds a certain number of ticks
AddYears                                    Adds a certain number of years
GetDateTimeFormats               Returns a list of available datetime formats
GetHashCode                            Returns hashcode for a certain date. int is returned
IsDaylightSavingTime             Determines if a datetime object is daylightsavings
Subtract                                    Subtracts a timespan object from datetime object
ToBinary                                  Serializes object to long value to be used later
ToFileTime                           Converts datetime to a windows file time
ToLocalTime                        Returns a local time object as datetime
ToLongDateString                 Returns a string as a longdate format
ToLongTimeString                Returns a string as a long time format
ToOADate                            Converts a datetime object to a OLE automation date
ToShortDateString                    Returns a short date format
ToShortTimeString                    Returns a short time format
ToString                                    Returns a string that represents the datetime object