I found this awesome example of calling a Main Thread from a worker
thread on abstractvb.com but I read through the example and would like
to see if anyone can clarify some of this code below:
Questions:
1. The Public Sub New proceedure. Is that just a proceedure named
new or is there more to this? I went through the code and I do not
see any refrences to 'New'
2.Does anyone have any really good links to threading articles. The
microsoft links that I have are not clearly illustrated.
Imports System.Threading
Public Delegate Sub CallBack(ByVal intTotal As Integer, ByVal
strThreadName As String)
Public Class Counter
Private LabelToUpdate As Label
Private MaxCount As Integer
Private CallBackMethod As CallBack
Public Sub New(ByVal l As Label, ByVal intMax As Integer, ByVal cb
As CallBack)
LabelToUpdate = l
MaxCount = intMax
CallBackMethod = cb
End Sub
Public Sub BeginProcessing()
Dim i As Integer
For i = 1 To MaxCount
LabelToUpdate.Text = i
LabelToUpdate.Refresh()
Next
CallBackMethod(i - 1, Thread.CurrentThread.Name)
End Sub
End Class
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
Dim c1 As New Counter(Label1, 3000, AddressOf ThreadCompleted)
Dim c2 As New Counter(Label2, 1000, AddressOf ThreadCompleted)
Dim t1 As New Thread(AddressOf c1.BeginProcessing)
Dim t2 As New Thread(AddressOf c2.BeginProcessing)
t1.Name = "Counter Thread 1"
t2.Name = "Counter Thread 2"
t1.Start()
t2.Start()
End Sub
Private Sub ThreadCompleted(ByVal intValue As Integer, ByVal strName
As String)
MsgBox("Thread " & strName & " has completed at " & intValue)
End Sub
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