本文整理汇总了VB.NET中System.Threading.WaitHandle.WaitTimeout字段的典型用法代码示例。如果您正苦于以下问题：VB.NET WaitHandle.WaitTimeout字段的具体用法？VB.NET WaitHandle.WaitTimeout怎么用？VB.NET WaitHandle.WaitTimeout使用的例子？那么, 这里精选的字段代码示例或许可以为您提供帮助。您也可以进一步了解该字段所在类System.Threading.WaitHandle的用法示例。
在下文中一共展示了WaitHandle.WaitTimeout字段的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: Test
' 导入命名空间
Imports System.IO
Imports System.Threading
Public Class Test
<MTAThread> _
Shared Sub Main()
Dim search As New Search()
search.FindFile("SomeFile.dat")
End Sub
End Class
Public Class Search
' Maintain state information to pass to FindCallback.
Class State
Public autoEvent As AutoResetEvent
Public fileName As String
Sub New(anEvent As AutoResetEvent, fName As String)
autoEvent = anEvent
fileName = fName
End Sub
End Class
Dim autoEvents() As AutoResetEvent
Dim diskLetters() As String
Sub New()
' Retrieve an array of disk letters.
diskLetters = Environment.GetLogicalDrives()
autoEvents = New AutoResetEvent(diskLetters.Length - 1) {}
For i As Integer = 0 To diskLetters.Length - 1
autoEvents(i) = New AutoResetEvent(False)
Next i
End Sub
' Search for fileName in the root directory of all disks.
Sub FindFile(fileName As String)
For i As Integer = 0 To diskLetters.Length - 1
Console.WriteLine("Searching for {0} on {1}.", _
fileName, diskLetters(i))
ThreadPool.QueueUserWorkItem(AddressOf FindCallback, _
New State(autoEvents(i), diskLetters(i) & fileName))
Next i
' Wait for the first instance of the file to be found.
Dim index As Integer = _
WaitHandle.WaitAny(autoEvents, 3000, False)
If index = WaitHandle.WaitTimeout
Console.WriteLine(vbCrLf & "{0} not found.", fileName)
Else
Console.WriteLine(vbCrLf & "{0} found on {1}.", _
fileName, diskLetters(index))
End If
End Sub
' Search for stateInfo.fileName.
Sub FindCallback(state As Object)
Dim stateInfo As State = DirectCast(state, State)
' Signal if the file is found.
If File.Exists(stateInfo.fileName) Then
stateInfo.autoEvent.Set()
End If
End Sub
End Class