Question

我试图让我的“开始”按钮在图片顶部标记的所有4个框中生成一个颜色。颜色不应该相同。它应该像Lotto一样工作但是用Colors而不是数字。谁能告诉我我的代码有什么问题？

这就是我的代码;

        }

        private void buttonStart_Click(object sender, EventArgs e)
        {
            buttontest.BackColor = GetRandomColor();
            timer1.Enabled = true;
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            Color RandomColor = GetRandomColor();
            buttontest.BackColor = GetRandomColor();
            buttontest.Refresh();
        }

        private Random random;

        private void MainForm_Load(object sender, EventArgs e)
        {
            //Create a new instance of the random class
            random = new Random();
        }

        private Color GetRandomColor()
        {
            return Color.FromArgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255));
        }

        private void buttontest_Click(object sender, EventArgs e)
        {
            timer1.Enabled = true;
            buttontest.BackColor = Color.Red;

        }


    }
}

Answer 1

你问题的答案是这样的：

Random random = new Random();

private Color GetRandomColor()
{
    return Color.FromArgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255));
}

private void btnStart_Click(object sender, EventArgs e)
{
    button1.BackColor = GetRandomColor();
    button2.BackColor = GetRandomColor();
    button3.BackColor = GetRandomColor();
    button4.BackColor = GetRandomColor();
}

但是我知道游戏MasterMind你想拥有一组特定的颜色。然后代码应该是这样的：

List<Color> possibleColors = new List<Color>()
{
    Color.Red,
    Color.Green,
    Color.Gold,
    Color.Blue
};

private Color GetRandomColorOfList()
{
    return possibleColors[random.Next(0, possibleColors.Count)];
}

private void button5_Click(object sender, EventArgs e)
{
    button1.BackColor = GetRandomColorOfList();
    button2.BackColor = GetRandomColorOfList();
    button3.BackColor = GetRandomColorOfList();
    button4.BackColor = GetRandomColorOfList();
}

Answer 2

您可以使用上面Michael Seidel建议的列表，并在点击Start按钮时将其随机播放，例如，使用Fisher-Yates算法here。

private static Random rng = new Random();  

public static void Shuffle<T>(this IList<T> list)  
{  
    int n = list.Count;  
    while (n > 1) {  
        n--;  
        int k = rng.Next(n + 1);  
        T value = list[k];  
        list[k] = list[n];  
        list[n] = value;  
    }  
}
List<Color> possibleColors = new List<Color>()
{
    Color.Red,
    Color.Green,
    Color.Gold,
    Color.Blue
};

private void button5_Click(object sender, EventArgs e)
{
    possibleColors.Shuffle();
    button1.BackColor = possibleColors[0];
    button2.BackColor = possibleColors[1];
    button3.BackColor = possibleColors[2];
    button4.BackColor = possibleColors[3];
}

如何制作随机按钮背色发生器？

2 个答案: