• Article

Duration.Subtraction Operator

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Subtracts the value of one Duration from another.

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

Syntax

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

public static Duration operator -(
    Duration t1,
    Duration t2
)

Parameters

Return Value

Type: System.Windows.Duration
If each Duration has values, a Duration that represents the value of t1 minus t2. If t1 has a value of Forever and t2 has a value of TimeSpan, this method returns Forever. Otherwise this method returns nulla null reference (Nothing in Visual Basic).

Remarks

The following calculations all return a value of Automatic.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, 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.