System Namespace DateTime Structure
Converts the value of this instance to an equivalent OLE Automation date.
[ VB ]
<Serializable>
Public Function ToOADate ( ) As Double
[ C# ]
[ Serializable ]
public double ToOADate ( );
[ C++ ]
[ Serializable ]
public: double ToOADate ( );
[ JScript ]
public Serializable
function ToOADate ( ) : double;
A double-precision floating-point number that contains an OLE Automation date equivalent to the value of this instance.
| Exception Type |
Condition |
| OverflowException |
The value of this instance cannot be represented as an OLE Automation Date. |
An OLE Automation date is implemented as a floating-point number whose value is the number of days from midnight, 30 December 1899. For example, midnight, 31 December 1899 is represented by 1.0; 6 A.M., 1 January 1900 is represented by 2.25; midnight, 29 December 1899 represented by -1.0; and 6 A.M., 29 December 1899 represented by -1.25.
Only DateTime objects with a tick value that is greater than or equal to positive or negative 31241376000000000 can be represented as an OLE Automation Date. An uninitialized DateTime, that is, an instance with a tick value of 0, is converted to an equivalent uninitialized OLE Automation Date, that is, a date with a value of 0.0 which represents midnight, 30 December 1899.
NOTE: The Ticks value of a DateTime is between MinValue and MaxValue.
NOTE: The maximum value of a DateTime is equal to the maximum value of an OLE Automation Date.
See FromOADate and the MSDN Online Libary at http://msdn.microsoft.com/library/default.asp for more information about OLE Automation.
DateTime Members Double FromOADate
