void image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            Image image = sender as Image;

            int selectPic = (int)image.DataContext;
            int column = Grid.GetColumn(image);
            int row = Grid.GetRow(image);

            if (this.RemovedPictureIndexs.Contains(selectPic) == true)
            {
                return;
            }

            moveCount ++;

            if (this.selectPicInfo == null)
            {
                this.selectPicInfo = new SelectPicInfo() { PictureIndex = selectPic, Column = column, Row = row };

                string bitmapUri = string.Format(@"/images/Bitmap{0}.bmp", selectPic);

                BitmapImage bitmapImage = new BitmapImage(new Uri(bitmapUri, UriKind.Relative));

                image.Source = bitmapImage;
            }
            else if (this.selectPicInfo.Column != column ||
                     this.selectPicInfo.Row != row)
            {
                string bitmapUri = string.Format(@"/images/Bitmap{0}.bmp", selectPic);

                BitmapImage bitmapImage = new BitmapImage(new Uri(bitmapUri, UriKind.Relative));

                image.Source = bitmapImage;

                if (this.selectPicInfo.PictureIndex == selectPic)
                {
                    this.selectPicInfo = null;
                    this.RemovedPictureIndexs.Add(selectPic);

                    if (this.RemovedPictureIndexs.Count >= 8)
                    {
                        if (MessageBoxResult.OK == MessageBox.Show("游戏结束!你总共用了" + moveCount.ToString() + "步", "恭喜你", MessageBoxButton.OK))
                        {
                            this.InitPictures();
                        }
                    }
                }
                else
                {
                    UIElement preSelectPic = null;

                    foreach (UIElement item in grdPics.Children)
                    {
                        if (Grid.GetRow(item) == selectPicInfo.Row &&
                            Grid.GetColumn(item) == selectPicInfo.Column)
                        {
                            preSelectPic = item;
                        }
                    }

                    this.selectPicInfo = null;

                    Task task = new Task(ResetPicture, image);
                    task.Start();

                    task = new Task(ResetPicture, preSelectPic);
                    task.Start();
                }
            }
            else
            {
                MessageBox.Show("点击了重复的图像, 无效");
                this.selectPicInfo = null;

                string bitmapUri = @"/images/BlankBitmap.bmp";

                BitmapImage bitmapImage = new BitmapImage(new Uri(bitmapUri, UriKind.Relative));

                image.Source = bitmapImage;
            }
        }
        private void InitPictures()
        {
            this.RemovedPictureIndexs = new List<int>();
            this.selectPicInfo = null;
            this.grdPics.Children.Clear();
            moveCount = 0;

            List<int> startList = Enumerable.Range(0, 16).Select(value => value / 2).ToList();
            List<int> randomSortedList = CommonFunction.RandomSort(startList);

            for (int i = 0; i < randomSortedList.Count; i++)
            {
                string bitmapUri = @"/images/BlankBitmap.bmp";

                BitmapImage bitmapImage = new BitmapImage(new Uri(bitmapUri, UriKind.Relative));

                Image image = new Image();

                image.Source = bitmapImage;

                image.DataContext = randomSortedList[i];

                image.MouseLeftButtonDown += image_MouseLeftButtonDown;

                Grid.SetColumn(image, i % 4);
                Grid.SetRow(image, i / 4);

                this.grdPics.Children.Add(image);

            }
        }