Export (0) Print
Expand All

DateTimeOffset.LessThan Operator

Determines whether one specified DateTimeOffset object is less than a second specified DateTimeOffset object.

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

public static bool operator <(
	DateTimeOffset left,
	DateTimeOffset right
)

Parameters

left
Type: System.DateTimeOffset

The first object to compare.

right
Type: System.DateTimeOffset

The second object to compare.

Return Value

Type: System.Boolean
true if the UtcDateTime value of left is earlier than the UtcDateTime value of right; otherwise, false.

The LessThan method defines the operation of the less than operator for DateTimeOffset objects. It enables code such as the following:

DateTimeOffset date1 = new DateTimeOffset(2007, 6, 3, 14, 45, 0, 
             new TimeSpan(-7, 0, 0));
DateTimeOffset date2 = new DateTimeOffset(2007, 6, 3, 15, 45, 0,
             new TimeSpan(-6, 0, 0));
DateTimeOffset date3 = new DateTimeOffset(date1.DateTime, 
             new TimeSpan(-8, 0, 0));
Console.WriteLine(date1 < date2);        // Displays False
Console.WriteLine(date1 < date3);        // Displays True 

Before evaluating the left and right operands, the operator converts both operands to Coordinated Universal Time (UTC). The operation is equivalent to the following:

return left.UtcDateTime < right.UtcDateTime;

Languages that do not support custom operators can call the Compare method instead. In addition, some languages can also call the LessThan method directly, as the following example shows.

Dim date1 As New DateTimeOffset(#6/3/2007 2:45PM#, _
             New TimeSpan(-7, 0, 0))
Dim date2 As New DateTimeOffset(#6/3/2007 3:45PM#, _
             New TimeSpan(-6, 0, 0))
Dim date3 As New DateTimeOffset(date1.DateTime, _
             New TimeSpan(-8, 0, 0))
Console.WriteLine(DateTimeOffset.op_LessThan(date1, date2))  ' Displays False
Console.WriteLine(DateTimeOffset.op_LessThan(date1, date3))  ' Displays True

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Show:
© 2014 Microsoft