// on download button click
private void ePaperDlButton_Click(object sender, RoutedEventArgs e)
{
// on download button click get chosen epaper and the date
string ePaperName = ePaperChooser.Text;
// ?? is a Null coalescing operator, if not null use selectedDate if null use currentDate
DateTime ePaperDate = ePaperDatePicker.SelectedDate ?? DateTime.Now;
// incase user selects a dir and later deletes the dir, create one for them
DirectoryInfo dir = new DirectoryInfo(downloadDirTextbox.Text);
if (!dir.Exists)
{
dir.Create();
}
string downloadDir = downloadDirTextbox.Text;
epaper = new Epaper(ePaperName, ePaperDate, downloadDir);
// checks for the validity of input date, sets the download Link based on the paper chosen
epaper.PaperDownloadInfo();
if (epaper.IsIssueDateValid)
{
// clone the ePaper.DownloadLinkAndFileName property List
// _dlLinkAndFileName will be chnaged but we want to save the original DownloadLinkAndFileName as well
// hence the copy instead of assignment
_dlLinkAndFileName = new List <Dictionary <string, string> >(epaper.DownloadLinkAndFileName);
//System.Threading.Thread thread = new System.Threading.Thread(() =>
//{
// downloader.DownloadFileAsync(new Uri(url), epaper.PathWithFileName);
//});
//thread.Start();
// This application does not allow multi threading, so can't download two papers at the same time
// download the first link on the List, once this is done if more Links are available it is downloaded
// in onDownloadComplete Event Handler
// since webclient doesn't support concurrent I/O operations a loop is not used to download multiple files
// instead it is downloaded one after another upon download complete
if (_dlLinkAndFileName.Count > 0)
{
downloader.DownloadFileAsync(new Uri(_dlLinkAndFileName[0]["dlLink"]), _dlLinkAndFileName[0]["filePathName"]);
// deactivate the download button to prevent user from attempted download while one download is in progress
ePaperDlButton.IsEnabled = false;
}
else
{
MessageBox.Show(epaper.InvalidDateMsg); // shown if dates without the links are chosen for daily papers
}
}
else
{
MessageBox.Show(epaper.InvalidDateMsg); // shown if incorrect day of week is chosen for weekly, monthly or bimonthly papers
}
}
public ImagesToPdf(List <string> inpImagePaths, Epaper epaper)
{
ImageFilePath = inpImagePaths;
EpaperInstance = epaper;
}