线程中触发事件的问题?

Question

在一个类中有两个线程,主线程和后台辅助线程

后台线程在特定的时候需要触发类中的一个事件

能不能让后台线程发出一个指令,让主线程去触发事件,而不是直接由后台线程触发?

 

 

Answer 1

你好，我觉得你可以通过delegate可以实现相应的操作。

Answer 2

你好，能够说清楚点吗？最好用贴一段简单点的源码，把原理和实现说清楚，谢谢

Answer 3

你好，请你参考一下以下链接：
http://forums.msdn.microsoft.com/en-US/vblanguage/thread/6f8c75fd-ffcc-48d8-acb8-116a3c24025f/

Answer 4

Code Snippet

Public Event MainEvent(ByVal str As String)
    Dim calevent As New ManualResetEvent(False)
    Private Sub DoMain()
        AddHandler MainEvent, AddressOf DoMainEvent

        While (True)
            If (calevent.WaitOne(100, False)) Then
                calevent.Reset()
                RaiseEvent MainEvent("test")
            End If
            Debug.Print(Thread.CurrentThread.Name)
        End While
    End Sub
    Private Sub DoBack()

        Thread.Sleep(3000)
        Debug.Print(Thread.CurrentThread.Name)
        calevent.Set()

    End Sub
    Private Sub DoMainEvent(ByVal str As String)
        Debug.Print(Thread.CurrentThread.Name & ";" & str)
    End Sub

 

        Dim mainThread As New Thread(AddressOf DoMain)
        mainThread.Name = "main"
        mainThread.Start()

        Dim backThread As New Thread(AddressOf DoBack)
        backThread.Name = "back"
        backThread.Start()