'***************************************************************************
'作者：章鱼哥，QQ：3107073263 群：309816713
'如有疑问或好的建议请联系我，大家一起进步
'主要内容：
'     使用线程和委托
'主要功能：
'    每2秒改变窗体按钮的位置，达到随机跳动的目的
' 实例需要控件：
'      窗体：Form1 按钮：Button1
'***********************************************************************
Imports System.Threading
Public Class Form1
    Private My_Thread As Thread
    Dim r As New Random
    Delegate Sub My_Delegate(ByVal x As Integer,ByVal Y As Integer)

    '第一步，开启线程
    Private Sub Form1_Load(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles MyBase.Load
        My_Thread = New Thread(AddressOf Deal_Thread)
        My_Thread.Start()
    End Sub
    '第二步，进入线程处理程序
    Private Sub Deal_Thread()
        While (True)
            Dim x As Integer = r.Next(Me.Width - Button1.Width)
            Dim y As Integer = r.Next(Me.Height - Button1.Height)
            Invoke_Thread(x,y) '使用委托
            Thread.Sleep(2000)
        End While

    End Sub
    '   第三步，给委托传递参数，引发委托
    Private Sub Invoke_Thread(ByVal x As Integer,ByVal Y As Integer)
        Dim hander As New My_Delegate(AddressOf Deal_Delegate)
        Me.Invoke(hander,x,Y)
    End Sub
    '第四部，更新窗体中控件
    Private Sub Deal_Delegate(ByVal x As Integer,ByVal Y As Integer)
        Button1.Location = New Point(x,Y)
    End Sub
    '最后别忘记关掉线程
    Private Sub Form1_FormClosing(ByVal sender As Object,ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        My_Thread.Abort()
    End Sub
End Class

运行效果：