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HostProtectionAttribute.ExternalThreading Property

Note: This property is new in the .NET Framework version 2.0.

Gets or sets a value indicating whether external threading is exposed.

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

public bool ExternalThreading { get; set; }
/** @property */
public boolean get_ExternalThreading ()

/** @property */
public void set_ExternalThreading (boolean value)

public function get ExternalThreading () : boolean

public function set ExternalThreading (value : boolean)

Property Value

true if external threading is exposed; otherwise, false. The default is false.

Code that exposes external threading creates or manipulates threads other than its own, which might be harmful to the host.

The following code example illustrates the use of the HostProtectionAttribute attribute with the ExternalThreading property. This example is part of a larger example provided for the HostProtectionAttribute class.

// Use the enumeration flags to indicate that this method exposes 
// synchronization and external threading.
[HostProtectionAttribute(Synchronization=true, ExternalThreading=true)]
private static void StartThread()
    Thread t = new Thread(new ThreadStart(WatchFileEvents));
    // Start the new thread. On a uniprocessor, the thread is not given
    // any processor time until the main thread yields the processor.
    // Give the new thread a chance to execute.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0