public void executeOperation(Button btn, Label lbl, String url, IDownloadObserver observer)
{
mIDownloadObserver = observer;
//
if (!System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable())
{
if (mIDownloadObserver != null)
{
mIDownloadObserver.onMessage(new DownloadArgument("NetworkFailed"));
}
return;
}
if (btn.Text == "Cancel")
{
btn.Text = "Download";
cancel(url);
return;
}
FileDownloader fd = create(lbl, url, observer, btn);
if (fd.DownloadStatus == "Continue")
{
return;
}
if (fd.DownloadStatus != "Completed")
{
fd.DownloadAsync(url, this);
btn.Text = "Cancel";
btn.Enabled = true;
}
}
void IDownloadObserver.onComplete(DownloadArgument e)
{
if (e.Downloader.Tag != null)
{
Button btn = (Button)e.Downloader.Tag;
if (e.AsyncCompletedEventArgs.Cancelled)
{
btn.Enabled = true;
btn.Text = "Download";
}
else if (e.AsyncCompletedEventArgs.Error != null)
{
// Error in Completion...
}
else
{
//Normal Complete..We can check Downloded Size and Remote Size to verify...
btn.Text = "Completed";
btn.Enabled = false;
e.Downloader.DownloadObserver = null;
mIDownloadObserver = null;
}
}
if (mIDownloadObserver != null)
{
mIDownloadObserver.onComplete(e);
}
//
//this.Remove(e.Downloader);
//e.Downloader = null;
}
//
public async System.Threading.Tasks.Task DownloadAsync(string remoteUri, IDownloadObserver observer)
{
this.url = remoteUri;
// Set the Notiifcation Observer..
this.DownloadObserver = observer;
//
String fileName = Path.GetFileName(remoteUri);
string filePath = Directory.GetCurrentDirectory() + "\\" + fileName;
this.downloadLocation = filePath;
mHttpClientWithProgress = new HttpClientWithProgress(remoteUri, filePath, this);
{
this.downloadStatus = "Continue";
//
mHttpClientWithProgress.ProgressChanged += (totalFileSize, totalBytesDownloaded, progressPercentage) => {
//Console.WriteLine($"{progressPercentage}% ({totalBytesDownloaded}/{totalFileSize})");
this.uodateStatus($"{progressPercentage}% ({totalBytesDownloaded}/{totalFileSize})");
if (progressPercentage == 100)
{
this.onComplete(this, new AsyncCompletedEventArgs(null, false, null));
}
};
await mHttpClientWithProgress.StartDownload();
}
}
public FileDownloader exeute(Label lblProgress, String url, IDownloadObserver IDownloadObserver)
{
mIDownloadObserver = IDownloadObserver;
//
FileDownloader fd = new FileDownloader(lblProgress);
this.Add(fd);
fd.DownloadAsync(url, this);
return(fd);
}
// We can pass all the ULRs here..in a list...
public void executeAllOperation(Button btn, Label lbl, String url, IDownloadObserver observer)
{
FileDownloader fd = create(lbl, url, observer, btn);
if (fd.DownloadStatus == "Continue")
{
return;
}
executeOperation(btn, lbl, url, observer);
}
public FileDownloader create(Label lblProgress, String url, IDownloadObserver IDownloadObserver, Button btn)
{
mIDownloadObserver = IDownloadObserver;
FileDownloader fd = this.getbyID(url);
if (fd == null)
{
fd = new FileDownloader(lblProgress);
this.Add(fd);
}
fd.Tag = btn;
return(fd);
}
//
public void Download(string remoteUri, IDownloadObserver observer)
{
this.url = remoteUri;
// Set the Notiifcation Observer..
this.DownloadObserver = observer;
//
String fileName = Path.GetFileName(remoteUri);
string filePath = Directory.GetCurrentDirectory() + "\\" + fileName;
this.downloadLocation = filePath;
//
//using (WebClient client = new WebClient())
mWebClient = new WebClient();
try
{
//To FIX this => "The request was aborted: Could not create SSL/TLS secure channel."
// using System.Net;
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
// Use SecurityProtocolType.Ssl3 if needed for compatibility reasons
start = DateTime.Now;
Uri uri = new Uri(remoteUri);
//password username of your file server eg. ftp username and password
//client.Credentials = new NetworkCredential("usr", "pass");
//delegate method, which will be called after file download has been complete.
mWebClient.DownloadFileCompleted += new AsyncCompletedEventHandler(onComplete);
//delegate method for progress notification handler.
mWebClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(onContinue);
// uri is the remote url where filed needs to be downloaded, and FilePath is the location where file to be saved
mWebClient.DownloadFileAsync(uri, filePath);
//
}
catch (Exception e)
{
onComplete(this, new AsyncCompletedEventArgs(e, false, null));
}
}
