Bevor ich versuchte, zu überprüfen, ob progressBar2, die den Fortschritt Gesamt Download zeigen bei 100%, aber es ist nicht wirklich funktioniert. Gibt es einen sichereren Weg, es zu überprüfen?Wie kann ich prüfen, ob alle Dateien heruntergeladen wurden?
private void btnDownload_Click(object sender, EventArgs e)
{
//urll.Add("http://download.thinkbroadband.com/1GB.zip");
btnDownload.Enabled = false;
label7.Text = "Downloading...";
getTotalBytes(countryList);
CreateCountryDateTimeDirectories(newList);
downloadFile(newList);
}
private Queue<string> _downloadUrls = new Queue<string>();
private async void downloadFile(IEnumerable<string> urls)
{
foreach (var url in urls)
{
_downloadUrls.Enqueue(url);
}
await DownloadFile();
}
private async Task DownloadFile()
{
if (_downloadUrls.Any())
{
WebClient client = new WebClient();
client.DownloadProgressChanged += ProgressChanged;
client.DownloadFileCompleted += Completed;
var url = _downloadUrls.Dequeue();
sw = Stopwatch.StartNew();
if (url.Contains("true"))
{
await client.DownloadFileTaskAsync(new Uri(url), countriesMainPath + "\\" + currentDownloadCountry + "\\" + count + "Infrared.jpg");
}
else
{
await client.DownloadFileTaskAsync(new Uri(url), countriesMainPath + "\\" + currentDownloadCountry + "\\" + count + "Invisible.jpg");
}
return;
}
}
double percentageTotalDownload = 0;
double totalBytesDownloaded = 0;
private void ProgressChanged(object sender, DownloadProgressChangedEventArgs e)
{
// Calculate download speed and output it to labelSpeed.
label3.Text = string.Format("{0} kb/s", (e.BytesReceived/1024d/sw.Elapsed.TotalSeconds).ToString("0.00"));
// Update the progressbar percentage only when the value is not the same.
double bytesInCurrentDownload = (double)e.BytesReceived;
double totalBytesCurrentDownload = double.Parse(e.TotalBytesToReceive.ToString());
double percentageCurrentDownload = bytesInCurrentDownload/totalBytesCurrentDownload * 100;
ProgressBar1.Value = int.Parse(Math.Truncate(percentageCurrentDownload).ToString());//e.ProgressPercentage;
// Show the percentage on our label.
Label4.Text = e.ProgressPercentage.ToString() + "%";
// Update the label with how much data have been downloaded so far and the total size of the file we are currently downloading
label10.Text = string.Format("{0} MB's/{1} MB's",
(e.BytesReceived/1024d/1024d).ToString("0.00"),
(e.TotalBytesToReceive/1024d/1024d).ToString("0.00"));
//Let's update ProgressBar2
totalBytesDownloaded = e.BytesReceived + bytesFromCompletedFiles;
percentageTotalDownload = totalBytesDownloaded/totalBytesToDownload * 100;
progressBar2.Value = (int)percentageTotalDownload;
label6.Text = progressBar2.Value.ToString() + "%";
}
long bytesFromCompletedFiles = 0;
// The event that will trigger when the WebClient is completed
private async void Completed(object sender, AsyncCompletedEventArgs e)
{
await DownloadFile();
}
Zum Beispiel, wenn ich 100 Urls und es starten Sie den Download dann möchte ich in der fertiggestellten Ereignis wissen, wenn alle Dateien heruntergeladen und nicht nur ein jedes Mal.