Threading help

[gjianhui]

Hi i got a thread that goes like that.

dim thrd as System.Threading.Thread
thrd = New Threading.Thread(AddressOf ReceiveDataLoop)
        running = True
        thrd.Start()
    End Sub
    Private Sub ReceiveDataLoop()
        While (running)
            receiveData()
            Thread.Sleep(500)
        End While
    End Sub

when i want to abort the thread it will hang at the .abort method why is it so? how do i solve it?

' the thread called method
Public Sub receiveData()
        Dim statusck As Integer
        networkStream = tcpClient.GetStream()
        Dim bytes(tcpClient.ReceiveBufferSize) As Byte
 
        If networkStream.CanRead = True Then
            networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
            Dim returndata As String = Encoding.ASCII.GetString(bytes, 0, bytes.Length)
            If (returndata.ToString <> "") Then
                If (returndata.ToString = 9) Then
                    Me.WindowState = FormWindowState.Minimized
                    Me.NotifyIcon1.Visible = True
                    EnableLowLevelKeys(True)
                ElseIf (returndata.ToString = 1) Then
                    Me.WindowState = FormWindowState.Maximized
                    Me.NotifyIcon1.Visible = False
                    Me.Visible = True
                    Me.Show()
                    EnableLowLevelKeys(False)
                ElseIf (returndata.ToString = 0) Then
                    stopWhile()
                    MsgBox(running)
                    Disconnect()
                    Me.NotifyIcon1.Visible = False
                    MsgBox("I am here 1")
                    thrd.Abort() ' always hang here
                    MsgBox("I am here 2")
                    Application.Exit()
                End If
            End If
        End If
        networkStream.Flush()
    End Sub

[jmcilhinney]

Have you read about the Thread.Abort method? It throws an exception inside your thread that you are supposed to handle and perfrom any required cleanup operations before allowing the thread to terminate.

[gjianhui]

so when the info say throws an exception, we can put the things to handle in the catch. thanks for the help

[jmcilhinney]

http://msdn2.microsoft.com/en-us/lib...9d(VS.80).aspx