VB.NET 简单多线程
最近才学的VB.NET 还希望大家多帮忙 是这样的 我想有个数组 里面是一到一百的数字 然后我想采用多线程的方法,每个线程 从这数组取十个数 然后 分别平方 再放到listbox1 里面去 请问如何编写 谢谢! QQ 232789935 请加 我 ~~ 我想问下ByVal e As System.EventArgs) 中的E 是什么用 后面的sub是怎么传递他的数值的
最满意答案
多线程一般是不推荐用的,因为线程之间如果有共享资源的话会引起竞争,需要加锁处理;而且线程间没有时序关系,所以你在调试中可能会出现异步处理结束顺序与开始处理顺序不一致的情况(我在调试中已经发现该问题)。 针对你提出的这个问题,采用了多线程处理,利用的是BackgroundWorker也就是异步处理控件进行了处理。 代码已经经过调试通过。欢迎交流,如有问题,留下QQ或其他联系方式。 代码如下,并附程序截图。 ‘--------------------------------------------------- Imports System.ComponentModel '导入异步控件命名空间 Public Class Form1 Private howmany As Integer = 10 Private AnalysisNumber(0 To howmany - 1) As BackgroundWorker Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ListBox1.Items.Clear() creatNewBackgroundWorker() addHandle() startWork() End Sub Private Sub creatNewBackgroundWorker() For i As Integer = 0 To AnalysisNumber.Length - 1 AnalysisNumber(i) = New BackgroundWorker Next End Sub Private Sub addHandle() For i As Integer = 0 To AnalysisNumber.Length - 1 AddHandler AnalysisNumber(i).DoWork, AddressOf AnalysisNumber_DoWork AddHandler AnalysisNumber(i).RunWorkerCompleted, AddressOf AnalysisNumber_RunWorkerCompleted Next End Sub Private Sub startWork() For i As Integer = 0 To 9 Dim temp(0 To 9) As Integer For j As Integer = 1 To 10 temp(j - 1) = 10 * i + j Next AnalysisNumber(i).RunWorkerAsync(temp) Next End Sub Private Sub AnalysisNumber_DoWork(ByVal sender As Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Dim data As Integer() data = CType(e.Argument, Integer()) Dim temp As Integer For i As Integer = 0 To data.Length - 1 temp = data(i) data(i) = temp * temp Next e.Result = data End Sub Private Sub AnalysisNumber_RunWorkerCompleted(ByVal sender As Object, ByVal e As System.ComponentModel.RunWorkerCompletedEventArgs) Dim data As Integer() data = CType(e.Result, Integer()) For i As Integer = 0 To data.Length - 1 ListBox1.Items.Add(data(i)) Next End Sub End Class更多推荐
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