有人可以帮我吗 这是我的代码,我想让解压缩任务等待文件下载,但不是,并且它不会让我等待空白,我到处都看了看,我无法弄清楚,所以有人可以将我寄回给我代码谢谢(请注意,所有这些代码都可以使用,但不能与异步代码一起使用):
WebClient client = new WebClient();
client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(client_DownloadProgressChanged);
client.DownloadFileAsync(new Uri("https://webserver-test-1.000webhostapp.com/spacelightzipped.zip"), Environment.CurrentDirectory + "\\spacelightzipped.zip");
String ZipPath = Environment.CurrentDirectory + "\\spacelightzipped.zip";
String extractPath = Environment.CurrentDirectory;
ZipFile.ExtractToDirectory(ZipPath, extractPath);
System.Diagnostics.Process proc = new System.Diagnostics.Process
{
EnableRaisingEvents = false
};
proc.StartInfo.FileName = Environment.CurrentDirectory + "\\SpaceLightApp.exe";
proc.Start();
答案 0 :(得分:0)
您必须使用事件WebClient.DownloadFileCompleted,该事件将在文件完全下载后引发,然后对文件执行所需的任何代码。
因此,您需要为webClient注册事件。 就像:
client.DownloadFileCompleted += wc_DownloadFileCompleted;
然后调用您的代码以在DownloadFileCompleted事件中提取并执行。
private static void wc_DownloadFileCompleted(object sender, System.ComponentModel.AsyncCompletedEventArgs e)
{
String ZipPath = Environment.CurrentDirectory + "\\spacelightzipped.zip";
String extractPath = Environment.CurrentDirectory;
ZipFile.ExtractToDirectory(ZipPath, extractPath);
System.Diagnostics.Process proc = new System.Diagnostics.Process
{
EnableRaisingEvents = false
};
proc.StartInfo.FileName = Environment.CurrentDirectory + "\\SpaceLightApp.exe";
proc.Start();
}