Windows8 App2013.12.04 13:29
private async void GetFile()
       {
           Uri source = new Uri(imgUrl);
           StorageFile destinationFile;
           try
           {
               destinationFile = await ApplicationData.Current.LocalFolder.CreateFileAsync(
                   "downloadimage.jpg", CreationCollisionOption.GenerateUniqueName);
           }
           catch (FileNotFoundException ex)
           {
               return;
           }
           BackgroundDownloader downloader = new BackgroundDownloader();
           DownloadOperation download = downloader.CreateDownload(source, destinationFile);
           await download.StartAsync();
 
           //ResponseInformation response = download.GetResponseInformation();
           var stream = await download.ResultFile.OpenReadAsync();
 
           BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
           InMemoryRandomAccessStream ras = new InMemoryRandomAccessStream();
           BitmapEncoder enc = await BitmapEncoder.CreateForTranscodingAsync(ras, decoder);
 
           BitmapBounds bounds = new BitmapBounds();
           bounds.Height = 274;
           bounds.Width = 382;
           bounds.Y = 0;
           bounds.X = 0;
 
           enc.BitmapTransform.Bounds = bounds;
           await enc.FlushAsync();
 
           BitmapImage bImg = new BitmapImage();
           bImg.SetSource(ras);
           xImage.Source = bImg;
 
           //2
           InMemoryRandomAccessStream ras2 = new InMemoryRandomAccessStream();
           BitmapEncoder enc2 = await BitmapEncoder.CreateForTranscodingAsync(ras2, decoder);
           BitmapBounds bounds2 = new BitmapBounds();
           bounds2.Height = 274;
           bounds2.Width = 382;
           bounds2.Y = 274;
           bounds2.X = 0;
 
           enc2.BitmapTransform.Bounds = bounds2;
           await enc2.FlushAsync();
 
           BitmapImage bImg2 = new BitmapImage();
           bImg2.SetSource(ras2);
           xImage2.Source = bImg2;
 
           var filed = await ApplicationData.Current.LocalFolder.GetFilesAsync();
 
           foreach (var item in filed)
           {
               //그냥 모두 삭제 삭제 안된 파일이 있을경우 파일이 커지는경우를 방지
               await item.DeleteAsync();
           }
       }

 

참고

다운로드

http://stackoverflow.com/questions/19272878/how-to-save-image-downloaded-from-urlserver-to-local-folder-in-windows-store-a

 

crop

http://stackoverflow.com/questions/12349611/how-to-resize-image-in-c-sharp-winrt-winmd

 

삭제:

http://stackoverflow.com/questions/14978526/how-delete-file-in-localstorage-on-winrt

Posted by 동동(이재동)

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