using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.CompilerServices;

using Windows;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.Storage.Pickers;
using Windows.Storage;
using Windows.Storage.Streams;
using Windows.UI.Xaml.Media.Imaging;
using Windows.System.UserProfile;

namespace useraccountpicture_win8{
    class Program{
        static void Main(string[] args){
            ChangePic().Wait();
        }
        private static async Task ChangePic() {
            string imagePath = @"406834_10151891352620288_1306694667_n.jpg";
            var imageFile = await KnownFolders.DocumentsLibrary.CreateFileAsync(imagePath, CreationCollisionOption.ReplaceExisting);
            using (var inStream = File.OpenRead(imagePath))
            using (var outStream = await imageFile.OpenStreamForWriteAsync())
            {
                inStream.CopyTo(outStream);
                outStream.Flush();
            }

            await UserInformation.SetAccountPicturesAsync(null, imageFile, null);
        }

    }
}