TimeSpan.Subtraction Operator
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Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Operator - ( _
t1 As TimeSpan, _
t2 As TimeSpan _
) As TimeSpan
public static TimeSpan operator -(
TimeSpan t1,
TimeSpan t2
)
Parameters
- t1
Type: System.TimeSpan
The time interval to subtract from (the minuend).
- t2
Type: System.TimeSpan
The time interval to subtract (the subtrahend).
Return Value
Type: System.TimeSpan
An object whose value is the result of the value of t1 minus the value of t2.
Exceptions
| Exception | Condition |
|---|---|
| OverflowException | The return value is less than MinValue or greater than MaxValue. |
Examples
The following code example creates several pairs of TimeSpan objects and calculates their difference with the Subtraction operator.
' Example of the TimeSpan Addition and Subtraction operators.
Module Example
Const dataFmt As String = "{0,-38}{1,24}"
' Pad the end of a TimeSpan string with spaces if it does not
' contain milliseconds.
Function Align(ByVal interval As TimeSpan) As String
Dim intervalStr As String = interval.ToString()
Dim pointIndex As Integer = intervalStr.IndexOf(":"c)
pointIndex = intervalStr.IndexOf("."c, pointIndex)
If pointIndex < 0 Then intervalStr &= " "
Align = intervalStr
End Function
' Display TimeSpan parameters and their sum and difference.
Sub ShowTimeSpanSumDiff(ByVal outputBlock As System.Windows.Controls.TextBlock, ByVal Left As TimeSpan, ByVal Right As TimeSpan)
outputBlock.Text &= vbCrLf
outputBlock.Text &= String.Format(dataFmt, "TimeSpan Left", Align(Left)) & vbCrLf
outputBlock.Text &= String.Format(dataFmt, "TimeSpan Right", Align(Right)) & vbCrLf
outputBlock.Text &= String.Format(dataFmt, _
"TimeSpan.op_Addition( Left, Right )", _
Align(TimeSpan.op_Addition(Left, Right))) & vbCrLf
outputBlock.Text &= String.Format(dataFmt, _
"TimeSpan.op_Subtraction( Left, Right )", _
Align(TimeSpan.op_Subtraction(Left, Right))) & vbCrLf
End Sub
Public Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
outputBlock.Text &= _
"This example of the TimeSpan Addition and " & _
"Subtraction " & vbCrLf & "operators " & _
"generates the following output by creating " & vbCrLf & _
"several pairs of TimeSpan objects and calculating " & _
"and " & vbCrLf & "displaying the sum " & _
"and difference of each." & vbCrLf
' Create pairs of TimeSpan objects.
ShowTimeSpanSumDiff(outputBlock, _
New TimeSpan(1, 20, 0), _
New TimeSpan(0, 45, 10))
ShowTimeSpanSumDiff(outputBlock, _
New TimeSpan(1, 10, 20, 30, 40), _
New TimeSpan(-1, 2, 3, 4, 5))
ShowTimeSpanSumDiff(outputBlock, _
New TimeSpan(182, 12, 30, 30, 505), _
New TimeSpan(182, 11, 29, 29, 495))
ShowTimeSpanSumDiff(outputBlock, _
New TimeSpan(888888888888888), _
New TimeSpan(999999999999999))
End Sub
End Module
' This example of the TimeSpan Addition and Subtraction
' operators generates the following output by creating
' several pairs of TimeSpan objects and calculating and
' displaying the sum and difference of each.
'
' TimeSpan Left 01:20:00
' TimeSpan Right 00:45:10
' TimeSpan.op_Addition( Left, Right ) 02:05:10
' TimeSpan.op_Subtraction( Left, Right ) 00:34:50
'
' TimeSpan Left 1.10:20:30.0400000
' TimeSpan Right -21:56:55.9950000
' TimeSpan.op_Addition( Left, Right ) 12:23:34.0450000
' TimeSpan.op_Subtraction( Left, Right ) 2.08:17:26.0350000
'
' TimeSpan Left 182.12:30:30.5050000
' TimeSpan Right 182.11:29:29.4950000
' TimeSpan.op_Addition( Left, Right ) 365.00:00:00
' TimeSpan.op_Subtraction( Left, Right ) 01:01:01.0100000
'
' TimeSpan Left 1028.19:21:28.8888888
' TimeSpan Right 1157.09:46:39.9999999
' TimeSpan.op_Addition( Left, Right ) 2186.05:08:08.8888887
' TimeSpan.op_Subtraction( Left, Right ) -128.14:25:11.1111111
// Example of the TimeSpan Addition and Subtraction operators.
using System;
class Example
{
const string dataFmt = "{0,-18}{1,24}";
// Pad the end of a TimeSpan string with spaces if it does not
// contain milliseconds.
static string Align(TimeSpan interval)
{
string intervalStr = interval.ToString();
int pointIndex = intervalStr.IndexOf(':');
pointIndex = intervalStr.IndexOf('.', pointIndex);
if (pointIndex < 0) intervalStr += " ";
return intervalStr;
}
// Display TimeSpan parameters and their sum and difference.
static void ShowTimeSpanSumDiff(System.Windows.Controls.TextBlock outputBlock, TimeSpan Left, TimeSpan Right)
{
outputBlock.Text += "\n";
outputBlock.Text += String.Format(dataFmt, "TimeSpan Left", Align(Left)) + "\n";
outputBlock.Text += String.Format(dataFmt, "TimeSpan Right", Align(Right)) + "\n";
outputBlock.Text += String.Format(dataFmt, "Left + Right",
Align(Left + Right)) + "\n";
outputBlock.Text += String.Format(dataFmt, "Left - Right",
Align(Left - Right)) + "\n";
}
public static void Demo(System.Windows.Controls.TextBlock outputBlock)
{
outputBlock.Text += "This example of the TimeSpan " +
"Addition and Subtraction \noperators generates the " +
"following output by creating \nseveral pairs of " +
"TimeSpan objects and calculating and \ndisplaying " +
"the sum and difference of each." + "\n";
// Create pairs of TimeSpan objects.
ShowTimeSpanSumDiff(outputBlock,
new TimeSpan(1, 20, 0),
new TimeSpan(0, 45, 10));
ShowTimeSpanSumDiff(outputBlock,
new TimeSpan(1, 10, 20, 30, 40),
new TimeSpan(-1, 2, 3, 4, 5));
ShowTimeSpanSumDiff(outputBlock,
new TimeSpan(182, 12, 30, 30, 505),
new TimeSpan(182, 11, 29, 29, 495));
ShowTimeSpanSumDiff(outputBlock,
new TimeSpan(888888888888888),
new TimeSpan(999999999999999));
}
}
/*
This example of the TimeSpan Addition and Subtraction
operators generates the following output by creating
several pairs of TimeSpan objects and calculating and
displaying the sum and difference of each.
TimeSpan Left 01:20:00
TimeSpan Right 00:45:10
Left + Right 02:05:10
Left - Right 00:34:50
TimeSpan Left 1.10:20:30.0400000
TimeSpan Right -21:56:55.9950000
Left + Right 12:23:34.0450000
Left - Right 2.08:17:26.0350000
TimeSpan Left 182.12:30:30.5050000
TimeSpan Right 182.11:29:29.4950000
Left + Right 365.00:00:00
Left - Right 01:01:01.0100000
TimeSpan Left 1028.19:21:28.8888888
TimeSpan Right 1157.09:46:39.9999999
Left + Right 2186.05:08:08.8888887
Left - Right -128.14:25:11.1111111
*/
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.