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CountdownEvent Constructor

Initializes a new instance of CountdownEvent class with the specified count.

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

public CountdownEvent(
	int initialCount


Type: System.Int32
The number of signals initially required to set the CountdownEvent.


initialCount is less than 0.

iI initialCount is 0, the event is created in a signaled state.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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