C# 定时器（定时播放声音）

定时器

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

namespace counter
{
    public partial class Form1 : Form
    {
        int time; //全局变量
        int count;
        int sytime;
        public Form1（）
        {
            InitializeComponent（）;
        }

        private void labeltime_Click（object sender EventArgs e）
        {

        }

        private void Form1_Load（object sender EventArgs e） /*主界面加载*/
        {
            //int i;
            //for （i = 0; i < 100; i += 10）
            //{
            //    comboBox1.Items.Add（i.ToString（） + “ 秒“）;
            //}
            //comboB

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2019-01-23 22:10  counter\
     目录           0  2019-01-23 22:10  counter\.vs\
     目录           0  2019-01-23 22:10  counter\.vs\counter\
     目录           0  2019-01-23 22:10  counter\.vs\counter\v15\
     文件       55296  2019-01-27 13:22  counter\.vs\counter\v15\.suo
     目录           0  2019-01-23 22:10  counter\.vs\counter\v15\Server\
     目录           0  2019-01-27 13:22  counter\.vs\counter\v15\Server\sqlite3\
     文件           0  2019-01-23 22:10  counter\.vs\counter\v15\Server\sqlite3\db.lock
     文件      602112  2019-01-27 13:22  counter\.vs\counter\v15\Server\sqlite3\storage.ide
     目录           0  2019-01-25 00:06  counter\counter\
     文件         189  2019-01-23 22:10  counter\counter\App.config
     文件        5722  2019-01-25 00:06  counter\counter\Form1.Designer.cs
     文件        1758  2019-01-25 00:06  counter\counter\Form1.cs
     文件        6011  2019-01-25 00:06  counter\counter\Form1.resx
     文件         519  2019-01-23 22:10  counter\counter\Program.cs
     目录           0  2019-01-23 22:10  counter\counter\Properties\
     文件        1312  2019-01-23 22:10  counter\counter\Properties\AssemblyInfo.cs
     文件        2827  2019-01-23 22:10  counter\counter\Properties\Resources.Designer.cs
     文件        5612  2019-01-23 22:10  counter\counter\Properties\Resources.resx
     文件        1094  2019-01-23 22:10  counter\counter\Properties\Settings.Designer.cs
     文件         249  2019-01-23 22:10  counter\counter\Properties\Settings.settings
     目录           0  2019-01-23 22:10  counter\counter\bin\
     目录           0  2019-01-23 22:27  counter\counter\bin\Debug\
     文件        9728  2019-01-25 00:06  counter\counter\bin\Debug\counter.exe
     文件         189  2019-01-23 22:10  counter\counter\bin\Debug\counter.exe.config
     文件       28160  2019-01-25 00:06  counter\counter\bin\Debug\counter.pdb
     文件        3602  2019-01-23 22:18  counter\counter\counter.csproj
     目录           0  2019-01-23 22:10  counter\counter\obj\
     目录           0  2019-01-25 00:06  counter\counter\obj\Debug\
     文件        1443  2019-01-23 22:27  counter\counter\obj\Debug\DesignTimeResolveAssemblyReferences.cache
     文件        7176  2019-01-23 22:10  counter\counter\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
............此处省略13个文件信息