C# using a message box(yes/no) to restart my game

Question

I am creating a minefield style game as a task and I am wondering if there is a quick easy way to restart my game. When the character walks on to a bomb, I have a message box pop up saying 'game over, try again?' with a Yes and No option. I want the No option to close the game and I want the Yes option to restart the game to its original state that it is opened in. Any ideas? This is the message box code when it executes:

 private void checkBomb( int X, int Y)
{
    if (bombs[X, Y])
    {
        this.BackColor = Color.Red;
        downBtn.Enabled = false;
        upBtn.Enabled = false;
        leftBtn.Enabled = false;
        rightBtn.Enabled = false;
        showBombs();
        // Dialog box with two buttons: yes and no.
        //
        DialogResult result1 = MessageBox.Show("Game Over! Try again?",
        "Game Over",
        MessageBoxButtons.YesNo);
    }
    else
    {
        countBombs(X, Y);
    }
}

Answer 1

I think you would be able to do the following:

MessageBoxResult result = MessageBox.Show("Game Over! Try again?",
    "Game Over",
    MessageBoxButtons.YesNo);
if (result == MessageBoxResult.No)
{
    System.Windows.Application.Current.Shutdown();
}
if (result == MessageBoxResult.Yes)
{
    //Restart your game
}