winform实现倒计时的重置代码怎么做

[zbguolei]

“开始”、“暂停”的功能已实现。


请问：“重置”----计时重新开始，如何实现？


相关代码如下：

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 倒计时
{
    public partial class Form1 : Form
    {
        TimeSpan ts = new TimeSpan(0, 2, 0);     //声明时间段，结构为TimeSpan(hour,minute,second)
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            
        }

        private void timer1_Tick(object sender, EventArgs e)    //表示在设定的时间间隔后，自动触发的事件
        {
            
            ts = ts.Subtract(new TimeSpan(0, 0, 1));   //从中减去另一个TimeSpan值,每隔一秒减去一秒
            string str_hr = ts.Hours > 9 ? Convert.ToString(ts.Hours) : "0" + Convert.ToString(ts.Hours);
            string str_min = ts.Minutes > 9 ? Convert.ToString(ts.Minutes) : "0" + Convert.ToString(ts.Minutes);
            string str_sec = ts.Seconds > 9 ? Convert.ToString(ts.Seconds) : "0" + Convert.ToString(ts.Seconds);

            label1.Text = str_hr + ":" + str_min + ":" + str_sec;

            if (ts.TotalSeconds <= 0.0)//当倒计时完毕
            {
                timer1.Enabled = false;   //其中可自行添加相应的提示框或者方法函数
            }
        }

        private void Form1_Shown(object sender, EventArgs e)        //只有在首次显示窗体时才会引发 Shown 事件
        {
            this.WindowState = FormWindowState.Maximized;   //最大化
            

            int xWidth = SystemInformation.PrimaryMonitorSize.Width; //获取显示器屏幕宽度
            int yHeight = SystemInformation.PrimaryMonitorSize.Height;//高度

            label1.Font = new System.Drawing.Font("", xWidth/6);

            this.button1.Location= new System.Drawing.Point(100,yHeight - 100);
            this.button2.Location = new System.Drawing.Point(500, yHeight - 100);
            this.button3.Location = new System.Drawing.Point(800, yHeight - 100);
            
        }

        private void button2_Click(object sender, EventArgs e)  //暂停按钮
        {
            if (timer1.Enabled)
            {
                timer1.Stop();
                timer1.Enabled = false;
                
            }
        }

        private void button1_Click(object sender, EventArgs e)      //开始按钮
        {
            timer1.Interval = 1000;//设置每次间隔1s
            timer1.Enabled = true;
            timer1.Start();
        }

        private void button3_Click(object sender, EventArgs e)      //重置按钮
        {
            timer1.Stop();
            
        }
    }
}

[zbguolei]

我已经调试成功了，谢谢指点，让我深入了解的变量和方法。

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 倒计时
{
    public partial class Form1 : Form
    {
        TimeSpan ts = new TimeSpan(0, 1, 0);     //声明时间段，结构为TimeSpan(hour,minute,second)
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            timer1.Interval = 1000;//设置每次间隔1s
            show();
        }

        private void show()
        {
            string str_hr = ts.Hours > 9 ? Convert.ToString(ts.Hours) : "0" + Convert.ToString(ts.Hours);
            string str_min = ts.Minutes > 9 ? Convert.ToString(ts.Minutes) : "0" + Convert.ToString(ts.Minutes);
            string str_sec = ts.Seconds > 9 ? Convert.ToString(ts.Seconds) : "0" + Convert.ToString(ts.Seconds);
            label1.Text = str_hr + ":" + str_min + ":" + str_sec;
        }

        private void timer1_Tick(object sender, EventArgs e)    //表示在设定的时间间隔后，自动触发的事件
        {
            
            ts = ts.Subtract(new TimeSpan(0, 0, 1));   //从中减去另一个TimeSpan值,每隔一秒减去一秒
            show();

            if (ts.TotalSeconds <= 0.0)//当倒计时完毕
            {
                timer1.Enabled = false;   //其中可自行添加相应的提示框或者方法函数
                label1.Text = "时间到！";
            }
        }

        private void Form1_Shown(object sender, EventArgs e)        //只有在首次显示窗体时才会引发 Shown 事件
        {
            this.WindowState = FormWindowState.Maximized;   //最大化
            
            int xWidth = SystemInformation.PrimaryMonitorSize.Width; //获取显示器屏幕宽度
            int yHeight = SystemInformation.PrimaryMonitorSize.Height;//高度

            label1.Font = new System.Drawing.Font("", xWidth/6);

            this.button1.Location= new System.Drawing.Point(100,yHeight - 100);
            this.button2.Location = new System.Drawing.Point(500, yHeight - 100);
            this.button3.Location = new System.Drawing.Point(800, yHeight - 100);
            
        }

        private void button2_Click(object sender, EventArgs e)  //暂停按钮
        {
            if (timer1.Enabled)
            {
                timer1.Stop();
                timer1.Enabled = false;
                
            }
        }

        private void button1_Click(object sender, EventArgs e)      //开始按钮
        {
            
            timer1.Enabled = true;
            timer1.Start();
        }

        private void button3_Click(object sender, EventArgs e)      //重置按钮
        {
            timer1.Stop();
            ts = new TimeSpan(0, 1, 0);
            show();
        }
    }
}

[以专业开发人员为伍]

搞懂你自己代码的 ts 是干什么的即可。

[智者知已应修善业]

ts = new TimeSpan(0, 2, 0);

[zbguolei]

ts是总的时长啊。