Contains a constant used to specify an infinite amount of time. This class cannot be inherited.
Assembly: mscorlib (in mscorlib.dll)
The following code example shows a thread going to sleep for an infinite time and subsequently being woken up.
Option Explicit Option Strict Imports System Imports System.Security.Permissions Imports System.Threading <Assembly: SecurityPermissionAttribute(SecurityAction.RequestMinimum, _ ControlThread := True)> Public Class ThreadInterrupt <MTAThread> _ Shared Sub Main() Dim stayAwake As New StayAwake() Dim newThread As New Thread(AddressOf stayAwake.ThreadMethod) newThread.Start() ' The following line causes an exception to be thrown ' in ThreadMethod if newThread is currently blocked ' or becomes blocked in the future. newThread.Interrupt() Console.WriteLine("Main thread calls Interrupt on newThread.") ' Tell newThread to go to sleep. stayAwake.SleepSwitch = True ' Wait for newThread to end. newThread.Join() End Sub End Class Public Class StayAwake Dim sleepSwitchValue As Boolean = False WriteOnly Property SleepSwitch As Boolean Set sleepSwitchValue = Value End Set End Property Sub New() End Sub Sub ThreadMethod() Console.WriteLine("newThread is executing ThreadMethod.") While Not sleepSwitchValue ' Use SpinWait instead of Sleep to demonstrate the ' effect of calling Interrupt on a running thread. Thread.SpinWait(10000000) End While Try Console.WriteLine("newThread going to sleep.") ' When newThread goes to sleep, it is immediately ' woken up by a ThreadInterruptedException. Thread.Sleep(Timeout.Infinite) Catch ex As ThreadInterruptedException Console.WriteLine("newThread cannot go to " & _ "sleep - interrupted by main thread.") End Try End Sub End Class
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The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.