var embeddedImage = new Image { Aspect = Aspect.AspectFit };
embeddedImage.Source = ImageSource.FromResource("applicationIcon.png");

string localFileUri = string.Empty;

// Get hold of the file system.
IFolder localFolder = FileSystem.Current.LocalStorage;

IFile file = await FileSystem.Current.GetFileFromPathAsync("applicationIcon.png");

using (Stream stream = await file.OpenAsync(FileAccess.Read))
{
    using (var ms = new MemoryStream())
    {
        var byteArray = ms.ToArray();

        var storeragePath = await iStorageService.SaveBinaryObjectToStorageAsync(string.Format(FileNames.ApplicationIcon, app.ApplicationId), byteArray);
        app.IconURLLocal = storeragePath;
    }
}