/// <summary>
/// 异步工作器回调事件通知
/// </summary>
/// <param name="handle">异步工作器句柄</param>
/// <param name="data">工作器获取的数据，例如异步获取到的数据集合。</param>
/// <param name="exception">工作器内引发的异常</param>
public AsyncWorkerCallbackEventArgs(AsyncWorkerHandle <T> handle, T data, Exception exception)
: base()
{
this.handle = handle;
this.data = data;
this.exception = exception;
}
/// <summary>
/// 异步工作器开始工作
/// </summary>
/// <param name="timeoutSeconds">设置工作器超时时长，单位为秒，默认为10秒。工作器超时之后工作将被取消。</param>
/// <returns>异步工作器句柄</returns>
public AsyncWorkerHandle <T> StartWork(int timeoutSeconds)
{
if (timeoutSeconds < 0)
{
throw new ArgumentException("Invalid timeout seconds.", "timeoutSeconds");
}
this.worker.RunWorkerAsync();
SetTimeoutTimer(timeoutSeconds);
handle = new AsyncWorkerHandle <T>(this);
return(handle);
}