C#利用自带控件实现圆形指示灯

利用C#自带的控件实现圆形指示灯，通过按钮点击事件实现圆形指示灯变色。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace testOvalShape
{
    public partial class Form1 : Form
    {
        int flag = 0;
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void button1_Click（object sender EventArgs e）
        {
            flag=（++flag）%3;
            if （flag == 0）
            {
                ovalShape1.FillColor = Color.DarkGray;
                ovalShape1.FillGradientColor = Color.Gray;
            }
            if （flag == 1）
            {
                ovalShape1.FillColor = Color.Lime;
                ovalShape1.FillGradientColor = Color.FromArgb（192255192）;
            }
            if （flag == 2）
            {
                ovalShape1.FillColor = Color.Red;
                ovalShape1.FillGradientColor = Color.PeachPuff;
            }
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       9728  2018-08-16 21:41  testOvalShape\testOvalShape\bin\Debug\testOvalShape.exe

     文件      19968  2018-08-16 21:41  testOvalShape\testOvalShape\bin\Debug\testOvalShape.pdb

     文件      11600  2018-08-17 20:00  testOvalShape\testOvalShape\bin\Debug\testOvalShape.vshost.exe

     文件        490  2010-03-17 22:39  testOvalShape\testOvalShape\bin\Debug\testOvalShape.vshost.exe.manifest

     文件       1039  2018-08-16 12:01  testOvalShape\testOvalShape\Form1.cs

     文件       3770  2018-08-16 12:01  testOvalShape\testOvalShape\Form1.Designer.cs

     文件       5817  2018-08-16 12:01  testOvalShape\testOvalShape\Form1.resx

     文件      10525  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

     文件       6549  2018-08-17 20:00  testOvalShape\testOvalShape\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

     文件        658  2018-08-17 20:00  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.csproj.FileListAbsolute.txt

     文件        975  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.csproj.GenerateResource.Cache

     文件      14363  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.csprojResolveAssemblyReference.cache

     文件       9728  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.exe

     文件        180  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.Form1.resources

     文件      19968  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.pdb

     文件        180  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug\testOvalShape.Properties.Resources.resources

     文件        494  2018-08-16 11:49  testOvalShape\testOvalShape\Program.cs

     文件       1376  2018-08-16 11:49  testOvalShape\testOvalShape\Properties\AssemblyInfo.cs

     文件       2878  2018-08-16 11:49  testOvalShape\testOvalShape\Properties\Resources.Designer.cs

     文件       5612  2018-08-16 11:49  testOvalShape\testOvalShape\Properties\Resources.resx

     文件       1100  2018-08-16 11:49  testOvalShape\testOvalShape\Properties\Settings.Designer.cs

     文件        249  2018-08-16 11:49  testOvalShape\testOvalShape\Properties\Settings.settings

     文件       3897  2018-08-16 11:57  testOvalShape\testOvalShape\testOvalShape.csproj

     文件        881  2018-08-16 11:49  testOvalShape\testOvalShape.sln

    ..A..H.     57856  2018-08-16 21:47  testOvalShape\testOvalShape.suo

     目录          0  2018-08-16 11:49  testOvalShape\testOvalShape\obj\x86\Debug\TempPE

     目录          0  2018-08-16 21:41  testOvalShape\testOvalShape\obj\x86\Debug

     目录          0  2018-08-16 21:41  testOvalShape\testOvalShape\bin\Debug

     目录          0  2018-08-16 11:49  testOvalShape\testOvalShape\obj\x86

     目录          0  2018-08-16 11:49  testOvalShape\testOvalShape\bin

............此处省略7个文件信息