Joining Threads in VB.net

By: Steven Holzner Emailed: 1757 times Printed: 2452 times    

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You can use the Join method to wait until a thread finishes; this method will return when the thread is finished executing. Here are the various forms of this method:

  • Sub Join- Waits for a thread to die.

  • Function Join(TimeOut As Integer) As Boolean -Waits for the thread to die or for a specific timeout, given as a number of milliseconds, to elapse. Returns True if the thread died, False if the call timed out.

  • Function Join(TimeOut As TimeSpan) As Boolean- Waits for the thread to die or for a specific timeout, given as a TimeSpan object, to elapse. Returns True if the thread died, False if the call timed out.

Example:

    Private Sub Button1_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button1.Click
        Thread1.Start()
        Thread2.Start()
        Thread1.Join()
        Thread2.Join()
        TextBox1.Text = c.Total
    End Sub

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