thread.sleep - static

I dont know why the thread.sleep is static.If i want to sleep a particular thred how can i do??

May be there is something in delegate function

It seems you didn't start the second thread after you set interval . Here is a quick exmple how to do it :

VB Code:

Dim thread1 As Threading.Thread
    Dim thread2 As Threading.Thread
 
    
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        thread1 = New Threading.Thread(AddressOf threadPro1)
        thread2 = New Threading.Thread(AddressOf threadPro2)
        thread1.Start()
        thread2.Sleep(50000)
        thread2.Start()
    End Sub
 
    Private Sub threadPro1()
        MessageBox.Show("Thread1 fired")
    End Sub
 
    Private Sub threadPro2()
        MessageBox.Show("Thread2 fired")
    End Sub