c# - 单击后如何切换椭圆形背景色？

多数民众赞成在我的代码，它与按钮一起使用，但不适用于我的OvalShape。我需要C＃中的Master Mind游戏。单击后，椭圆形应更改颜色。它应该能够变成红色，黄色，蓝色，白色，绿色和紫色6种颜色。

     private void ovalShape1_4_Click(object sender, EventArgs e)
    {
        Control ctrl = ((Control)sender);
        switch (ctrl.BackColor.Name)
        {
            case "Red":
                ctrl.BackColor = Color.Yellow;
                break;
            case "Black":
                ctrl.BackColor = Color.Green;
                break;
            case "White":
                ctrl.BackColor = Color.Red;
                break;
            case "Yellow":
                ctrl.BackColor = Color.Purple;
                break;
            default:
                ctrl.BackColor = Color.Red;
                break;





using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic.PowerPacks;

namespace Mastermind2
{
    public static class ControlCollectionExtension
    {
        public static IList<OvalShape> ToList(this ShapeCollection aiShapeCollection)
        {
            IList<OvalShape> aoShapes = new List<OvalShape>();

            foreach (OvalShape ctrl in aiShapeCollection)
                aoShapes.Add(ctrl);

            return aoShapes;
        }
    }
}

最佳答案

公开变数

int index = 0;

之后，使这个逻辑，这可能对您有帮助

 private void ovalShape1_4_Click(object sender, EventArgs e)
{
OvalShape ctrl = ((OvalShape)sender);
        switch (index)
        {
            case 0:
                ctrl.BackColor = Color.Yellow;
                break;
            case 1:
                ctrl.BackColor = Color.Green;
                break;
            case 2:
                ctrl.BackColor = Color.Red;
                break;
            case 3:
                ctrl.BackColor = Color.Purple;
                break;
            default:
                ctrl.BackColor = Color.Red;
                index = 0;
                break;
        }
}

关于c# - 单击后如何切换椭圆形背景色？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/35862570/