/// <summary>
/// 下载中
/// </summary>
private void StartDownLoad()
{
//是否超过最大的队列
if (_downingPicCount < _maxtask)
{
List <string> imgurls = HttpHelper.GetHtmlImageUrlList(LoadingUrls.FirstOrDefault());
UsedUrls.Add(LoadingUrls.FirstOrDefault());
LoadingUrls.RemoveAt(0);
foreach (string url in imgurls)
{
if (!UsedImgUrls.Contains(url))
{
//创建异步下载
DownloadHelper helper = new DownloadHelper();
StopTimeHandler stop = new StopTimeHandler(helper.DowloadImg);
AsyncCallback callback = new AsyncCallback(onDownLoadFinish);
IAsyncResult asyncResult = stop.BeginInvoke(url, callback, "--下载完成 \r\n");
//链接载入已使用
UsedImgUrls.Add(url);
TipStartDownLoad();
}
}
imgurls.Clear();
TextUrlChange("");
}
else
{
Thread.Sleep(5000);
TextResultChange("-----------任务过多，搜集程序休眠5秒 \r\n");
}
DownLoading();
}
/// <summary>
/// 下载成功
/// </summary>
/// <param name="asyncresult"></param>
private void onDownLoadFinish(IAsyncResult asyncresult)
{
AsyncResult result = (AsyncResult)asyncresult;
StopTimeHandler del = (StopTimeHandler)result.AsyncDelegate;
string data = (string)result.AsyncState;
string name = del.EndInvoke(result);
TextResultChange(name + data);
_downLoadPicCount++;
_downingPicCount--;
TipDownLoad();
}
