Compare Method

DateTime.Compare Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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)

'Declaration
Public Shared Function Compare ( _
	t1 As DateTime, _
	t2 As DateTime _
) As Integer

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.


Dim date1 As Date = #08/01/2009 12:00AM#
Dim date2 As Date = #08/01/2009 12:00PM#
Dim result As Integer = DateTime.Compare(date1, date2)
Dim relationship As String

If result < 0 Then
   relationship = "is earlier than"
ElseIf result = 0 Then
   relationship = "is the same time as"         
Else
   relationship = "is later than"
End If

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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