100行C#代码实现经典扫雷游戏

    <DockPanel>
        <DockPanel.Resources>
            <Style TargetType="TextBlock">
                <Setter Property="Margin" Value="5"/>
            </Style>
            <Style TargetType="TextBox">
                <Setter Property="Margin" Value="5"/>
                <Setter Property="InputMethod.IsInputMethodEnabled" Value="False"/>
            </Style>

        </DockPanel.Resources>
        <ToolBar DockPanel.Dock="Top">
            <TextBlock Text="雷区尺寸"/>
            <TextBox Width="40" Text="20" x:Name="txtNumX"/>
            <TextBlock Text="×"/>
            <TextBox Width="40" Text="20" x:Name="txtNumY"/>
            <TextBlock Text="雷数"/>
            <TextBox Width="40" Text="20" x:Name="txtNumMine"/>
            <Button Content="🔄" Click="btnNewGame_Click"/>
        </ToolBar>
        <UniformGrid Name="ugMine">
        </UniformGrid>

private void newGame()
{
   x = int.Parse(txtNumX.Text);
   y = int.Parse(txtNumY.Text);
   var nBtns = x * y;
   nMark = 0;
   nRes = int.Parse(txtNumMine.Text);
   if (nRes > nBtns)
       nRes = nBtns;

   pMine = new List<int>();

   ugMine.Rows = y;
   ugMine.Columns = x;
   ugMine.Children.Clear();

   Random rd = new Random();
   int numSetMine = 0;         //已经布置的雷的个数

   for (int i = 0; i < nBtns; i++)
   {
       var btn = new Button();
       ugMine.Children.Add(btn);
       btn.Click += Btn_Click;
       btn.MouseRightButtonDown += Btn_MouseRightButtonDown;
       btn.Content = "";
       btn.Tag = false;
       if ((nRes - numSetMine) == (nBtns - i) ||       //如果剩余的雷数刚好等于剩余的按钮数，则剩下的按钮都是雷
           (numSetMine < nRes && rd.Next(0, nBtns) < nRes))
       {
           btn.Tag = true;
           numSetMine += 1;
           pMine.Add(i);
       }
   }
}

//左键单击
private void Btn_Click(object sender, RoutedEventArgs e)
{
   var btn = sender as Button;
   int index = ugMine.Children.IndexOf(btn);
   flipButton(index);
   if(nMark == pMine.Count || nRes == pMine.Count)
       MessageBox.Show("您赢了！");
}
//右键单击
private void Btn_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
   var btn = sender as Button;
   var flag = btn.Content.ToString() != "🚩";
   if (flag)
       btn.Click -= Btn_Click;	//如果已经标记，则卸载左键的功能
   else
       btn.Click += Btn_Click;	//如果取消标记，则重新挂载左键的功能

   btn.Content = flag ? "🚩" : "";
   btn.Foreground = flag ? Brushes.Red : Brushes.Gray;
   nMark += flag ? 1 : -1;
}

private void flipButton(int index)
{
   var btn = ugMine.Children[index] as Button;
   if (!btn.IsEnabled)
       return;
   if ((bool)btn.Tag)
   {
       foreach (var i in pMine)
       {
           var mine = ugMine.Children[i] as Button;
           mine.Content = "💥";
           mine.Foreground = Brushes.Red;
       }
       MessageBox.Show("您输了");
       return;
   }
   nRes -= 1;
   btn.IsEnabled = false;
   int numMines = 0;

   var nears = setNear(index);
   foreach (var i in nears)
   {
       var near = ugMine.Children[i] as Button;
       if ((bool)near.Tag) 
           numMines += 1;
   }
   if (numMines != 0)
       btn.Content = numMines;
   else
       foreach (var i in nears)
           flipButton(i);
}

private int[] setNear(int index)
{
   if (index == 0)
       return new int[3] { 1, x, x + 1 };
   if (index == x * y - 1)
       return new int[3] { index - 1, index - x, index - x - 1 };
   if (index == x - 1)
       return new int[3] { x - 2, 2 * x - 1, 2 * x - 2 };
   if (index == x * y - x)
       return new int[3] { index + 1, index - x, index - x + 1 };
   if (index % x == 0)
       return new int[5] { index - x, index - x + 1, index + 1, index + x, index + x + 1 };
   if (index % x == (x - 1))
       return new int[5] { index - x - 1, index - x, index - 1, index + x - 1, index + x };
   if (index < x)
       return new int[5] { index - 1, index + 1, index + x - 1, index + x, index + x + 1 };
   if (index > x * (y - 1))
       return new int[5] { index - x - 1, index - x, index - x + 1, index - 1, index + 1 };
   return new int[8] { index - 1, index + 1, index - x, index-x-1,
       index-x+1,index + x,index+x-1,index+x+1 };
}