新手请教：这种ComboBox与Button结合的效果如何实现？

Question

如上图：根据ComboBox的下拉列表的选项，实现button的不同选择以及自由选择 

Answer 1

在combox的事件里作个判断
如果选择的是奇数，则循环所有的按钮，将奇数的铵钮颜色变为黄色，若是偶数则排在偶数的按钮颜色变黄色，很简单的

Answer 2

这样的控件就的楼主自己定义了，，直接用Combobox不得了

Answer 3

button选则，显示黄色，是怎么实现的呢？

Answer 4

 
private void cmbDevity_SelectedIndexChanged(object sender, EventArgs e)//根据combobox选择
        {
            foreach (Control c in Controls)             //清空颜色
            {
                if (c is Button)
                {
                    c.BackColor = Color.Transparent;
                }
            }
            if (this.cmbDevity.Text.Equals("奇数"))
            {
                foreach (Control c in Controls)         //遍历控件，判断
                {
                    if (c is Button && int.Parse(c.Text) % 2 != 0)
                    {
                        c.BackColor = Color.Yellow;
                    }
                }
            }
            else
            {
                foreach (Control c in Controls)
                {
                    if (c is Button && int.Parse(c.Text) % 2 == 0)
                    {
                        c.BackColor = Color.Yellow;
                    }
                }
            }
        }

Answer 5

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            int index = comboBox1.SelectedIndex;
            switch (index)
            {
                //全选,所有按钮紫色
                case 0:
                    button1.BackColor = Color.Fuchsia;
                    button2.BackColor = Color.Fuchsia;
                    button3.BackColor = Color.Fuchsia;
                    button4.BackColor = Color.Fuchsia;
                    button5.BackColor = Color.Fuchsia;
                    button6.BackColor = Color.Fuchsia;
                    button7.BackColor = Color.Fuchsia;
                    button8.BackColor = Color.Fuchsia;
                    button9.BackColor = Color.Fuchsia;
                    button10.BackColor = Color.Fuchsia;
                    break;//不要跳到下个分支
                case 1://奇数
                    button1.BackColor = Color.Transparent;
                    button2.BackColor = Color.Fuchsia;
                    button3.BackColor = Color.Transparent;
                    button4.BackColor = Color.Fuchsia;
                    button5.BackColor = Color.Transparent;
                    button6.BackColor = Color.Fuchsia;
                    button7.BackColor = Color.Transparent;
                    button8.BackColor = Color.Fuchsia;
                    button9.BackColor = Color.Transparent;
                    button10.BackColor = Color.Fuchsia;
                    break;//不要跳到下个分支
                case 2://偶数
                    button1.BackColor = Color.Fuchsia;
                    button2.BackColor = Color.Transparent;
                    button3.BackColor = Color.Fuchsia;
                    button4.BackColor = Color.Transparent;
                    button5.BackColor = Color.Fuchsia;
                    button6.BackColor = Color.Transparent;
                    button7.BackColor = Color.Fuchsia;
                    button8.BackColor = Color.Transparent;
                    button9.BackColor = Color.Fuchsia;
                    button10.BackColor = Color.Transparent;
                    break;//不要跳到下个分支
                case 3://大数
                    button1.BackColor = Color.Transparent;
                    button2.BackColor = Color.Transparent;
                    button3.BackColor = Color.Transparent;
                    button4.BackColor = Color.Transparent;
                    button5.BackColor = Color.Transparent;
                    button6.BackColor = Color.Fuchsia;
                    button7.BackColor = Color.Fuchsia;
                    button8.BackColor = Color.Fuchsia;
                    button9.BackColor = Color.Fuchsia;
                    button10.BackColor = Color.Fuchsia;
                    break;//不要跳到下个分支
                case 4://小数
                    button1.BackColor = Color.Fuchsia;
                    button2.BackColor = Color.Fuchsia;
                    button3.BackColor = Color.Fuchsia;
                    button4.BackColor = Color.Fuchsia;
                    button5.BackColor = Color.Fuchsia;
                    button6.BackColor = Color.Transparent;
                    button7.BackColor = Color.Transparent;
                    button8.BackColor = Color.Transparent;
                    button9.BackColor = Color.Transparent;
                    button10.BackColor = Color.Transparent;
                    break;//不要跳到下个分支
                case 5://质数
                    button1.BackColor = Color.Transparent;
                    button2.BackColor = Color.Transparent;
                    button3.BackColor = Color.Fuchsia;
                    button4.BackColor = Color.Fuchsia;
                    button5.BackColor = Color.Transparent;
                    button6.BackColor = Color.Fuchsia;
                    button7.BackColor = Color.Transparent;
                    button8.BackColor = Color.Fuchsia;
                    button9.BackColor = Color.Transparent;
                    button10.BackColor = Color.Transparent;
                    break;//不要跳到下个分支
                case 6://合数
                    button1.BackColor = Color.Fuchsia;
                    button2.BackColor = Color.Fuchsia;
                    button3.BackColor = Color.Transparent;
                    button4.BackColor = Color.Transparent;
                    button5.BackColor = Color.Fuchsia;
                    button6.BackColor = Color.Transparent;
                    button7.BackColor = Color.Fuchsia;
                    button8.BackColor = Color.Transparent;
                    button9.BackColor = Color.Fuchsia;
                    button10.BackColor = Color.Fuchsia;
                    break;//不要跳到下个分支
            }
        }