private async Task <List <BitmapImage> > UnzipFileHelper(string uri)
{
List <BitmapImage> _images = new List <BitmapImage>();
StorageFile zipFile = await StorageFile.GetFileFromPathAsync(uri);
Stream zipStream = await zipFile.OpenStreamForReadAsync();
using (ZipArchive zipArchive = new ZipArchive(zipStream, ZipArchiveMode.Read))
{
int total = zipArchive.Entries.Count;
int current = 0;
foreach (var entry in zipArchive.Entries)
{
current++;
using (var memStream = new MemoryStream())
{
await entry.Open().CopyToAsync(memStream);
memStream.Position = 0;
BitmapImage image = new BitmapImage();
image.SetSource(memStream.AsRandomAccessStream());
_images.Add(image);
}
_extractProgress.Percent = current * 100 / total;
_extractProgress.PercentString = string.Format("{0}%", _extractProgress.Percent);
if (_extractProgress.Percent == 100)
{
_extractProgress.Hide();
}
}
}
return(_images);
}
private void progressChanged(DownloadOperation dowloadOperation)
{
var byteRecieved = dowloadOperation.Progress.BytesReceived;
var byteTotal = dowloadOperation.Progress.TotalBytesToReceive;
_progress.Percent = (int)(100 * byteRecieved / byteTotal);
_progress.PercentString = string.Format("{0}%", _progress.Percent);
_progress.PrimaryButtonText = "Close";
switch (_downloadOperation.Progress.Status)
{
case BackgroundTransferStatus.Idle:
break;
case BackgroundTransferStatus.Running:
_progress.PrimaryButtonText = "Pause";
break;
case BackgroundTransferStatus.PausedByApplication:
case BackgroundTransferStatus.PausedCostedNetwork:
_progress.PrimaryButtonText = "Resume";
break;
case BackgroundTransferStatus.PausedNoNetwork:
_progress.PercentString = "Network Error";
break;
case BackgroundTransferStatus.Completed:
_progress.PercentString = "Completed";
break;
case BackgroundTransferStatus.Canceled:
_progress.PercentString = "Canceled";
break;
case BackgroundTransferStatus.Error:
break;
case BackgroundTransferStatus.PausedSystemPolicy:
break;
default:
throw new ArgumentOutOfRangeException();
}
if (_progress.Percent >= 100)
{
_progress.PercentString = "Download Completed";
_progress.Hide();
}
}
public async Task <List <BitmapImage> > Extract(string Uri)
{
_progress.Title = "Reading ...";
_progress.ShowAsync();
int numOfFile = 0;
List <BitmapImage> images = new List <BitmapImage>();
StorageFolder fd = await StorageFolder.GetFolderFromPathAsync(Uri);
var fileList = await fd.GetFilesAsync();
int totalFile = fileList.Count;
foreach (var storageFile in fileList)
{
if (storageFile.IsOfType(StorageItemTypes.File))
{
numOfFile++;
string mediaType = storageFile.ContentType.Split('/')[0];
if (mediaType == "image")
{
using (var stream = await storageFile.OpenAsync(FileAccessMode.Read))
{
var bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(stream);
images.Add(bitmapImage);
}
}
_progress.Percent = numOfFile * 100 / totalFile;
_progress.PercentString = string.Format("{0} / {1}", numOfFile, totalFile);
if (_progress.Percent == 100)
{
_progress.Hide();
}
}
}
return(images);
}
