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CountdownEvent.Signal Method

Registers a signal with the CountdownEvent, decrementing the value of CurrentCount.

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

public bool Signal()

Return Value

Type: System.Boolean
true if the signal caused the count to reach zero and the event was set; otherwise, false.

ExceptionCondition
ObjectDisposedException

The current instance has already been disposed.

InvalidOperationException

The current instance is already set.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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