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Subtraction Operator

Duration.Subtraction Operator

Subtracts the value of one instance of Duration from another.

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

static let inline (-)
        t1:Duration * 
        t2:Duration  : Duration


Type: System.Windows.Duration

The first instance of Duration.

Type: System.Windows.Duration

The instance of Duration to subtract.

Return Value

Type: System.Windows.Duration
If both instances of Duration have values, an instance of 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 a null reference (Nothing in Visual Basic).

The following calculations all return a value of Automatic.

.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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