/// <summary>
/// Saves the selected attachment to file
/// </summary>
private async Task <bool> SaveAttachment()
{
if (SelectedIndex != -1)
{
byte[] byteArray;
List <MimeEntity> list = CurrentMessage.Attachments.ToList();
var attachment = list[SelectedIndex];
var fileName = attachment.ContentDisposition?.FileName ?? attachment.ContentType.Name;
//Converts the attachment to a byte array
byteArray = HelperUtils.ConvertAttachmentToByteArray(attachment);
if (byteArray == null)
{
return(false);
}
var savePicker = new Windows.Storage.Pickers.FileSavePicker();
savePicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.Desktop;
//Gets file extension
int index = fileName.LastIndexOf(".");
string fileType = fileName.Substring(index);
savePicker.FileTypeChoices.Add(fileType.Substring(1), new List <string>()
{
fileType
});
savePicker.DefaultFileExtension = fileType;
savePicker.SuggestedFileName = fileName;
//Lets the user choose how to save the file
StorageFile file = await savePicker.PickSaveFileAsync();
if (file != null)
{
Windows.Storage.CachedFileManager.DeferUpdates(file);
//Writes byte array to Storagefile
await Windows.Storage.FileIO.WriteBytesAsync(file, byteArray);
Windows.Storage.Provider.FileUpdateStatus status =
await Windows.Storage.CachedFileManager.CompleteUpdatesAsync(file);
if (status == Windows.Storage.Provider.FileUpdateStatus.Complete)
{
return(true);
}
else
{
Debug.WriteLine("File " + file.Name + " couldn't be saved");
return(false);
}
}
else
{
Debug.WriteLine("Operation cancelled");
return(false);
}
}
else
{
return(false);
}
}