A Silverlight Minesweeper

Here's a simple Minesweeper-like game for Silverlight 2. It was mainly a programming exercise, so there aren't too many multimedia bells and whistles. Just a smooth transition when you open a square, and that's all. No sound. No explosions. No high score. No mines - just the letter 'M'. No automatic opening of tiles. Feel free to add the missing licks, if you like.
The board square is a Custom control with two states - "Opened" and "Closed", and two parts - a TextBlock that contains the number of adjacent mines or the letter 'M' if the square is a mine, and a Rectangle that initially covers the TextBlock. When you click a square, the state changes and the Rectangle's opacity goes to zero, thus showing the TextBlock underneath. Here's the relevant part of the ControlTemplate:

<vsm:VisualState x:Name="Closed"></vsm:VisualState>
<vsm:VisualState x:Name="Opened">
    <Storyboard>
        <DoubleAnimation Duration="0:0:0.3" From="1" To="0"
                         Storyboard.TargetName="ClosingRectangle"
                         Storyboard.TargetProperty="Opacity">
        </DoubleAnimation>
    </Storyboard>
</vsm:VisualState>

The board is a User control that uses the square's SquareClicked event to check for won/lost conditions. You win if you open all the squares that don't contain mines. If you open a mine, you lose miserably. Here's the logic:

private void Square_SquareClicked(object sender, EventArgs e)
{
    if (isPlaying)
    {
        openedSquares++;
        if (openedSquares >= BOARD_SIZE * BOARD_SIZE - NUMBER_OF_MINES)
        {
            isPlaying = false;
            OnWonGame();
        }

        BoardSquare clickedSquare = sender as BoardSquare;
        if (clickedSquare != null && clickedSquare.Value == "M")
        {
            isPlaying = false;
            OnLostGame();
        }
    }
}

Basically, it keeps track of the number of squares opened so far. If that number reaches the total number of squares minus the number of mines, you've got yourself a winner. If the value of the opened square is 'M' for 'mine' - kaboom!!!!

You can tweak some settings by changing the values of the constants in the Page class:

private const int BOARD_SIZE = 7;
private const int NUMBER_OF_MINES = 8;

What these do is self-explanatory.

You can download the source code from here.

Regards,
Boyan