TimeSpan.UnaryNegation Operator
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Returns a TimeSpan whose value is the negated value of the specified instance.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Operator - ( _
t As TimeSpan _
) As TimeSpan
public static TimeSpan operator -(
TimeSpan t
)
Parameters
- t
Type: System.TimeSpan
The time interval to be negated.
Return Value
Type: System.TimeSpan
An object that has the same numeric value as this instance, but the opposite sign.
Exceptions
| Exception | Condition |
|---|---|
| OverflowException | The negated value of this instance cannot be represented by a TimeSpan; that is, the value of this instance is MinValue. |
Examples
The following code example applies the Unary Negation operator to several TimeSpan objects.
' Example of the TimeSpan.Duration( ) and TimeSpan.Negate( ) methods,
' and the TimeSpan Unary Negation and Unary Plus operators.
Module Example
Const dataFmt As String = "{0,22}{1,22}{2,22}"
Sub ShowDurationNegate(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal interval As TimeSpan)
' Display the TimeSpan value and the results of the
' Duration and Negate methods.
outputBlock.Text &= String.Format(dataFmt, _
interval, interval.Duration(), interval.Negate()) & vbCrLf
End Sub
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
outputBlock.Text &= String.Format( _
"This example of TimeSpan.Duration( ), " & _
"TimeSpan.Negate( ), " & vbCrLf & _
"and the TimeSpan Unary Negation and " & _
"Unary Plus operators " & vbCrLf & _
"generates the following output." & vbCrLf) & vbCrLf
outputBlock.Text &= String.Format(dataFmt, _
"TimeSpan", "Duration( )", "Negate( )") & vbCrLf
outputBlock.Text &= String.Format(dataFmt, _
"--------", "-----------", "---------") & vbCrLf
' Create TimeSpan objects and apply the Unary Negation
' and Unary Plus operators to them.
ShowDurationNegate(outputBlock, New TimeSpan(1))
ShowDurationNegate(outputBlock, New TimeSpan(-1234567))
ShowDurationNegate(outputBlock, TimeSpan.op_UnaryNegation( _
New TimeSpan(1, 10, 20, 40, 160)))
ShowDurationNegate(outputBlock, TimeSpan.op_UnaryNegation( _
New TimeSpan(-10, -20, -30, -40, -50)))
End Sub
End Module
' This example of TimeSpan.Duration( ), TimeSpan.Negate( ),
' and the TimeSpan Unary Negation and Unary Plus operators
' generates the following output.
'
' TimeSpan Duration( ) Negate( )
' -------- ----------- ---------
' 00:00:00.0000001 00:00:00.0000001 -00:00:00.0000001
' -00:00:00.1234567 00:00:00.1234567 00:00:00.1234567
' 00:09:39.9700000 00:09:39.9700000 -00:09:39.9700000
' -09:40:29.9600000 09:40:29.9600000 09:40:29.9600000
' -1.10:20:40.1600000 1.10:20:40.1600000 1.10:20:40.1600000
' 10.20:30:40.0500000 10.20:30:40.0500000 -10.20:30:40.0500000
// Example of the TimeSpan.Duration( ) and TimeSpan.Negate( ) methods,
// and the TimeSpan Unary Negation and Unary Plus operators.
using System;
class Example
{
const string dataFmt = "{0,22}{1,22}{2,22}";
static void ShowDurationNegate(System.Windows.Controls.TextBlock outputBlock, TimeSpan interval)
{
// Display the TimeSpan value and the results of the
// Duration and Negate methods.
outputBlock.Text += String.Format(dataFmt,
interval, interval.Duration(), interval.Negate()) + "\n";
}
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
outputBlock.Text += String.Format(
"This example of TimeSpan.Duration( ), " +
"TimeSpan.Negate( ), \nand the TimeSpan Unary " +
"Negation and Unary Plus operators \n" +
"generates the following output.\n") + "\n";
outputBlock.Text += String.Format(dataFmt,
"TimeSpan", "Duration( )", "Negate( )") + "\n";
outputBlock.Text += String.Format(dataFmt,
"--------", "-----------", "---------") + "\n";
// Create TimeSpan objects and apply the Unary Negation
// and Unary Plus operators to them.
ShowDurationNegate(outputBlock, new TimeSpan(1));
ShowDurationNegate(outputBlock, new TimeSpan(-1234567));
ShowDurationNegate(outputBlock,
new TimeSpan(0, 0, 10, -20, -30));
ShowDurationNegate(outputBlock,
new TimeSpan(0, -10, 20, -30, 40));
ShowDurationNegate(outputBlock,
new TimeSpan(1, 10, 20, 40, 160));
ShowDurationNegate(outputBlock,
new TimeSpan(-10, -20, -30, -40, -50));
}
}
/*
This example of TimeSpan.Duration( ), TimeSpan.Negate( ),
and the TimeSpan Unary Negation and Unary Plus operators
generates the following output.
TimeSpan Duration( ) Negate( )
-------- ----------- ---------
00:00:00.0000001 00:00:00.0000001 -00:00:00.0000001
-00:00:00.1234567 00:00:00.1234567 00:00:00.1234567
00:09:39.9700000 00:09:39.9700000 -00:09:39.9700000
-09:40:29.9600000 09:40:29.9600000 09:40:29.9600000
-1.10:20:40.1600000 1.10:20:40.1600000 1.10:20:40.1600000
10.20:30:40.0500000 10.20:30:40.0500000 -10.20:30:40.0500000
*/
Version Information
Silverlight
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
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.