private void btnStart_Click(object sender, EventArgs e)
{
WorkRange wr = new WorkRange {
nStart = 100, nEnd = 1000000
};
bgWork.RunWorkerAsync(wr); //开始执行后台操作
}
public event CompleteHandler Complete; //提供一定模板下的方法供具体实现
public ClsBgWorker(WorkRange wr)
{
Range = wr;
BgWorker = new BackgroundWorker();
BgWorker.WorkerSupportsCancellation = true;
BgWorker.DoWork += new DoWorkEventHandler(DoWork);
BgWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(RunWorkerCompleted);
}
private void btnStart_Click(object sender, EventArgs e)
{
WorkRange wr = new WorkRange();
id += 1;
wr.id = id;
wr.nStart = new Random().Next(1, 1000) * 100;
wr.nEnd = new Random().Next(1, 1000) * 1000;
bgWork = new ClsBgWorker(wr);
bgWork.Complete += new ClsBgWorker.CompleteHandler(DoComplete);
lstRange.Items.Add(wr.id.ToString() + '\t' + wr.nStart.ToString() + '\t' + wr.nEnd.ToString());
bgWork.Run();
}
private void btnStart_Click(object sender, EventArgs e)
{
WorkRange wr = new WorkRange();
id = id == 0 ? 1 : 0;
wr.id = id;
wr.nStart = new Random().Next(1, 1000) * 100;
wr.nEnd = new Random().Next(1, 1000) * 1000;
bgWork = new ClsBgWorker(wr, this);
bgWork.Complete += new ClsBgWorker.CompleteHandler(DoComplete);
bgWork.SendMessage += new ClsBgWorker.MessageHandler(SendMessage);
lstRange.Items.Clear();
lstResult.Items.Clear();
bgWork.Run();
}
private void bgWork_DoWork(object sender, DoWorkEventArgs e)
{
WorkRange wr = (WorkRange)e.Argument;
int sum = 0;
for (int k = 0; k < 1000; k++)
{
if (bgWork.CancellationPending) //指示应用程序是否已请求取消后台操作
{
e.Cancel = true;
return;
}
for (int i = wr.nStart; i < wr.nEnd; i++)
{
sum += i;
}
}
e.Result = sum;
}
private void btnStart_Click(object sender, EventArgs e)
{
bgWork = new BackgroundWorker();
bgWork.DoWork += new DoWorkEventHandler(DoWork);
bgWork.RunWorkerCompleted += new RunWorkerCompletedEventHandler(RunWorkerCompleted);
WorkRange wr = new WorkRange();
if ((Button)sender == btnStart1)
{
wr.id = 1;
wr.nStart = 100;
wr.nEnd = 100000;
}
else if ((Button)sender == btnStart2)
{
wr.id = 2;
wr.nStart = 500;
wr.nEnd = 200000;
}
bgWork.RunWorkerAsync(wr); //开始执行后台操作
}
