BackgroundWorker 简单示例（）

//异步使用前一定要把下面的代码进行初始化才能成功调用
//if (!bgwtemp.IsBusy)
//{
//bgwtemp.RunWorkerAsync();
//}

public BackgroundWorker bgwtemp = null;
public Form2()
{
InitializeComponent();
bgwtemp = new BackgroundWorker();
bgwtemp.DoWork += bgwtemp_work;
bgwtemp.RunWorkerCompleted += bgwtemp_RunWorkerCompleted;

}

private void bgwtemp_work(object sender, DoWorkEventArgs e)
{
ss();
}

private void bgwtemp_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
//MessageBox.Show("success");
}
delegate void WriteLogEvent(string value);
private void WriteLog(string value)
{
if (this.InvokeRequired)
{
WriteLogEvent w = new WriteLogEvent(WriteLog);
this.Invoke(w, new object[] { value });
}
else
{
try
{
richTextBox1.AppendText(DateTime.Now.ToString("HH:mm:ss") + " " + value + "\r\n");
richTextBox1.HideSelection = false;
}
catch (Exception ex)
{

}
}
}

public void ss()
{
for (int i = 0; i < 6; i++)
{
//Thread.Sleep(1000);
WriteLog(i.ToString());
}
}
private void Form2_Load(object sender, EventArgs e)
{
if (!bgwtemp.IsBusy)
{
bgwtemp.RunWorkerAsync();
}
}