backgroundworker_C # backgroundworker_winform进度条控件(6)

{

Button b = (Button)sender;

if (b.Text == "暂停")

{

for (int i = 0; i < mrs.Count; i++)

{

mrs[i].Reset();

}

b.Text = "继续";

}

else

{

for (int i = 0; i < mrs.Count; i++)

{

mrs[i].Set();

}

b.Text = "暂停";

}

}

void bw_DoWork(object sender, DoWorkEventArgs e)

{

int j = Convert.ToInt32(e.Argument);

for (int i = j; i < 1000; i = i + t)

{

if (((BackgroundWorker)sender).CancellationPending)

{

e.Cancel = true;

return;

}

string item = String.Format("线程{0}正在操作数据{1}", j + 1, i);

this.Invoke((MethodInvoker)delegate

{

this.richTextBox1.Text += item + Environment.NewLine;

});

Thread.Sleep(200);

mrs[j].WaitOne();

}

}

void bw_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)

{

bws.Remove(sender as BackgroundWorker);

if (bws.Count == 0)

{

if (e.Cancelled)

{

this.richTextBox1.Text += "线程已经停止";

}

else

{

this.richTextBox1.Text += "线程已经完成";

}

}

}

至此，所有的代码都奉上了，多个线程操作会带来很多意向不到的麻烦，比如多个线程同时把数据写入一个文件，多线程更新datatable等，会让软件莫名其妙的自动退出，.net2.0里还没有绝对线程安全的数据集，很多大佬都说用lock，但我对lock也是一知半解，还请大家赐教赐教，如上有什么说的不对，也请大家多多指点。

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