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


Type: System.DateTimeOffset
The first object to compare.
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));
outputBlock.Text += (date1 < date2) + "\n";        // Displays False
outputBlock.Text += (date1 < date3) + "\n";        // 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 2:45:00 PM#, _
             New TimeSpan(-7, 0, 0))
Dim date2 As New DateTimeOffset(#6/3/2007 3:45:00 PM#, _
             New TimeSpan(-6, 0, 0))
Dim date3 As New DateTimeOffset(date1.DateTime, _
             New TimeSpan(-8, 0, 0))
outputBlock.Text += DateTimeOffset.op_LessThan(date1, date2).ToString() & vbCrLf  ' Displays False
outputBlock.Text += DateTimeOffset.op_LessThan(date1, date3).ToString() & vbCrLf  ' Displays True


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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