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TimeSpan.Subtraction Operator

Subtracts a specified TimeSpan from another specified TimeSpan.

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

'Declaration
Public Shared Operator - ( _
	t1 As TimeSpan, _
	t2 As TimeSpan _
) As TimeSpan

Parameters

t1
Type: System.TimeSpan

The minuend.

t2
Type: System.TimeSpan

The subtrahend.

Return Value

Type: System.TimeSpan
An object whose value is the result of the value of t1 minus the value of t2.

ExceptionCondition
OverflowException

The return value is less than TimeSpan.MinValue or greater than TimeSpan.MaxValue.

The following example creates several pairs of TimeSpan objects and calculates their difference with the Subtraction operator.

' Example of the TimeSpan Addition and Subtraction operators. 
Imports System
Imports Microsoft.VisualBasic

Module TimeSpanAddSubOpsDemo

    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( 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( Left as TimeSpan, Right as TimeSpan )

        Console.WriteLine( )
        Console.WriteLine( dataFmt, "TimeSpan Left", Align( Left ) )
        Console.WriteLine( dataFmt, "TimeSpan Right", Align( Right ) )
        Console.WriteLine( dataFmt, _
            "TimeSpan.op_Addition( Left, Right )", _
            Align( TimeSpan.op_Addition( Left, Right ) ) )
        Console.WriteLine( dataFmt, _
            "TimeSpan.op_Subtraction( Left, Right )", _
            Align( TimeSpan.op_Subtraction( Left, Right ) ) )
    End Sub 

    Sub Main( )
        Console.WriteLine( _
            "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." )

        ' Create pairs of TimeSpan objects.
        ShowTimeSpanSumDiff( _
            new TimeSpan( 1, 20, 0 ), _
            new TimeSpan( 0, 45, 10 ) )
        ShowTimeSpanSumDiff( _
            new TimeSpan( 1, 10, 20, 30, 40 ), _
            new TimeSpan( -1, 2, 3, 4, 5 ) )
        ShowTimeSpanSumDiff( _
            new TimeSpan( 182, 12, 30, 30, 505 ), _
            new TimeSpan( 182, 11, 29, 29, 495 ) )
        ShowTimeSpanSumDiff( _
            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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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