here it is:
Action<int, ProgressBar, Label, Label, int, Button> downloadFileAsync = (i, pb, label2, label1, ServID, button1) =>
{
var bd = AppDomain.CurrentDomain.BaseDirectory;
var fn = bd + "/" + i + ".7z";
var down = new WebClient();
DownloadProgressChangedEventHandler dpc = (s, e) =>
{
label1.Text = "Download Update: " + i + " From: " + ServID;
int rec =Convert.ToInt16(e.BytesReceived / 1024);
int total =Convert.ToInt16(e.TotalBytesToReceive / 1024) ;
label2.Text = "Downloaded: " + rec.ToString() + " / " + total.ToString() + " KB";
pb.Value = e.ProgressPercentage;
};
AsyncCompletedEventHandler dfc = null; dfc = (s, e) =>
{
down.DownloadProgressChanged -= dpc;
down.DownloadFileCompleted -= dfc;
CompressionEngine.Current.Decoder.DecodeIntoDirectory(AppDomain.CurrentDomain.BaseDirectory + "/" + i + ".7z", AppDomain.CurrentDomain.BaseDirectory);
File.Delete(fn);
if (i == ServID)
{
button1.Enabled = true;
label1.Text = "Game Is Up-To-Date.Have Fun!!";
label2.Text = "Done..";
}
down.Dispose();
};
我现在唯一的问题是程序正在解压缩下载的文件
CompressionEngine.Current.Decoder.DecodeIntoDirectory(AppDomain.CurrentDomain.BaseDirectory + "/" + i + ".7z", AppDomain.CurrentDomain.BaseDirectory);
在某些文件中,需要时间来提取下载的文件 那我怎么能告诉程序要等到解压缩完成呢? (我使用BackgroundWorker)
答案 0 :(得分:0)
到目前为止,处理此类处理的最优雅方式是使用TPL Dataflow。
http://msdn.microsoft.com/en-us/devlabs/gg585582.aspx
这需要您稍微重构现有代码。但是,它提供了一种出色的机制来表达对它们有秩序感的并行编程任务。如果您以任何频率编写此类代码,都值得花时间学习数据流。
如果这不是一个选项,请查看AutoResetEvent。它将允许一个任务在不消耗资源的情况下等待,直到它所依赖的任务完成为止。
通知等待的线程发生了一个事件
http://msdn.microsoft.com/en-us/library/system.threading.autoresetevent.aspx