backgroundworker_clr backgroundworker_backgroundworker流程(2)

backgroundWorker1.WorkerReportsProgress = true;//报告完成进度

backgroundWorker1.WorkerSupportsCancellation = true;//允许用户终止后台线程

}

//开始按钮

private void button1_Click(object sender, EventArgs e)

{

if (!backgroundWorker1.IsBusy )//判断backgroundWorker1是否正在运行异步操作

{

//backgroundWorker1.RunWorkerAsync();

backgroundWorker1.RunWorkerAsync(1000);//开始执行后台操作，调用DoWork事件

}

}

//DoWork事件声明要执行的耗时操作

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)

{

e.Result = ListNumber(backgroundWorker1, e);//运算结果保存在e.Result中

}

bool ListNumber(object sender, DoWorkEventArgs e)

{

int num=(int)e.Argument;//接收传入的参数

for (int i = 1; i

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