BackgroundWorker 对象允许我们将单个参数传递给 DoWorkEventHandler。
// setup/init:
BackgroundWorker endCallWorker = new BackgroundWorker();
endCallWorker.DoWork += new DoWorkEventHandler(EndCallWorker_DoWork);
...
endCallWorker.RunWorkerAsync(userName);
// the handler:
private void EndCallWorker_DoWork(object sender, DoWorkEventArgs e)
{
string userName = e.Argument as string;
...
}
要传递多个参数,我必须将它们包装在一个对象中,比如这个糟糕的字符串数组:
// setup/init:
BackgroundWorker startCallWorker = new BackgroundWorker();
startCallWorker.DoWork += new DoWorkEventHandler(StartCallWorker_DoWork);
...
startCallWorker.RunWorkerAsync(new string[]{userName, targetNumber});
// the handler:
private void StartCallWorker_DoWork(object sender, DoWorkEventArgs e)
{
string[] args = e.Argument as string[];
string userName = args[0];
string targetNumber = args[1];
}
是否有另一个对象或模式允许我们很好地传递多个参数,或者理想情况下,编写我们自己的签名?