DateTime.Compare Method

July 28, 2014

Compares two instances of DateTime and returns an integer that indicates whether the first DateTime instance is earlier than, the same as, or later than the second DateTime instance.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

public static int Compare(
	DateTime t1,
	DateTime t2
)

Parameters

t1
Type: System.DateTime
The first object to compare.
t2
Type: System.DateTime
The second object to compare.

Return Value

Type: System.Int32
A signed number indicating the relative values of t1 and t2.

Value Type

Condition

Less than zero

t1 is earlier than t2.

Zero

t1 is the same as t2.

Greater than zero

t1 is later than t2.

Before comparing DateTime objects, ensure that the objects represent times in the same time zone.

The following example demonstrates the Compare method.


DateTime date1 = new DateTime(2009, 8, 1, 0, 0, 0);
DateTime date2 = new DateTime(2009, 8, 1, 12, 0, 0);
int result = DateTime.Compare(date1, date2);
string relationship;

if (result < 0)
   relationship = "is earlier than";
else if (result == 0)
   relationship = "is the same time as";         
else
   relationship = "is later than";

outputBlock.Text += String.Format("{0} {1} {2}", date1, relationship, date2) + Environment.NewLine;
// The example displays the following output:
//    8/1/2009 12:00:00 AM is earlier than 8/1/2009 12:00:00 PM


Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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