c#开发技术 计时器、数码管计时器、倒计时

前言

基于c#开发语言，笔者提供了一般类型的计时器、数码管类型的计时器以及倒计时程序，总计三个程序。上传的文件包含了完整文件，有需要的人可以自行下载。如果有错误的地方，还希望各位博友指出。

界面效果图

普通倒计时程序的界面效果图如图1所示。

图1

数码管计时器的界面效果图如图2所示。

图2 倒计时界面的效果图如图3所示。 图3

部分代码

Timer

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 Timer { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //当前时间值（以秒为单位） private int _nowSecond = 0; //“开始”按钮的点击响应事件方法 private void buttonStart_Click(object sender, EventArgs e) { //初始化当前的时间值（以秒为单位） _nowSecond = 0; //启动定时器 timer1.Enabled = true; timer2.Enabled = true; //启用或禁用按钮 buttonStart.Enabled = false; buttonPauseContinue.Enabled = true; buttonStop.Enabled = true; //显示冒号 labelColon1.Visible = true; labelColon2.Visible = true; } //“暂停/继续”按钮的点击响应事件方法 private void buttonPauseContinue_Click(object sender, EventArgs e) { //判断按钮为“暂停”按钮还是“继续”按钮 if (buttonPauseContinue.Text == "暂停") { //停止定时器 timer1.Enabled = false; timer2.Enabled = false; //改变按钮文字 buttonPauseContinue.Text = "继续"; } else { //启动定时器 timer1.Enabled = true; timer2.Enabled = true; //改变按钮文字 buttonPauseContinue.Text = "暂停"; } } //“停止”按钮的点击响应事件方法 private void buttonStop_Click(object sender, EventArgs e) { //停止定时器 timer1.Enabled = false; timer2.Enabled = false; //启用或禁用按钮 buttonStart.Enabled = true; buttonPauseContinue.Enabled = false; buttonStop.Enabled = false; //修改按钮文字 buttonPauseContinue.Text = "暂停"; } //timer1的Tick响应事件方法 private void timer1_Tick_1(object sender, EventArgs e) { //当前时间值（以秒为单位）加1 _nowSecond++; //把当前时间值（以秒为单位）转为hh：mm：ss形式 int hour = _nowSecond / 36000; int minute = (_nowSecond % 36000) / 600; double second = (_nowSecond % 36000) % 600 / 10.0; //以hh：mm：ss形式显示当前时间值 if (hour <= 9) labelHour.Text = "0" + hour.ToString(); else labelHour.Text = hour.ToString(); if (minute <= 9) labelMinute.Text = "0" + minute.ToString(); else labelMinute.Text = minute.ToString(); if (second < 10) labelSecond.Text = "0" + second.ToString(); else labelSecond.Text = second.ToString(); } //timer2的Tick响应事件方法 private void timer2_Tick(object sender, EventArgs e) { //让冒号闪烁起来 if (labelColon1.Visible == true) { labelColon1.Visible = false; labelColon2.Visible = false; } else { labelColon1.Visible = true; labelColon2.Visible = true; } } //窗口的Move事件响应方法 private void Form1_Move(object sender, EventArgs e) { //停靠屏幕左右边框 int screenRight = Screen.PrimaryScreen.Bounds.Right; int formRight = this.Left + this.Width; if (Math.Abs(screenRight - formRight) <= 100) this.Left = screenRight - this.Size.Width; if (Math.Abs(this.Left) <= 100) this.Left = 0; //停靠屏幕上下边框 int screenBottom = Screen.PrimaryScreen.Bounds.Bottom; int formBottom = this.Top + this.Height; if (Math.Abs(screenBottom - formBottom) <= 60) this.Top = screenBottom - this.Size.Height; if (Math.Abs(this.Top) <= 100) this.Top = 0; } } }

Timer_LED

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 Timer_LED { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //当前时间值（以秒为单位） private int _nowSecond = 0; //冒号标记符号 private bool _colonFlag = true; //“开始”按钮的点击响应事件方法 private void buttonStart_Click(object sender, EventArgs e) { //开启定时器 timer1.Enabled = true; timer2.Enabled = true; //启用或关闭按钮 buttonStart.Enabled = false; buttonParseContinue.Enabled = true; buttonStop.Enabled = true; } //“暂停/继续”按钮的点击响应事件方法 private void buttonPauseContinue_Click(object sender, EventArgs e) { //判断当前是“暂停”或“继续” if (buttonParseContinue.Text == "暂停") { //修改按钮文字 buttonParseContinue.Text = "继续"; //关闭定时器 timer1.Enabled = false; timer2.Enabled = false; } else { //修改按钮文字 buttonParseContinue.Text = "暂停"; //开启定时器 timer1.Enabled = true; timer2.Enabled = true; } } //“停止”按钮的点击响应事件方法 private void buttonStop_Click(object sender, EventArgs e) { //重置时间值（以秒为单位） _nowSecond = 0; //关闭定时器 timer1.Enabled = false; timer2.Enabled = false; //启用或禁用按钮 buttonStart.Enabled = true; buttonParseContinue.Enabled = false; buttonStop.Enabled = false; } //timer1的Tick事件响应方法 private void timer1_Tick(object sender, EventArgs e) { //时间值（以秒为单位）加1 _nowSecond++; //把当前时间值（以秒为单位）转为hh：mm：ss形式 int hour = _nowSecond / 3600; int minute = (_nowSecond % 3600) / 60; int second = (_nowSecond % 3600) % 60; //以hh：mm：ss形式显示当前时间值 if (hour <= 9) { pictureBoxHour1.Image = Image.FromFile(@"..\..\..\DigitalNums\0.bmp"); pictureBoxHour2.Image = Image.FromFile(@"..\..\..\DigitalNums\" + hour.ToString() + ".bmp"); } else { pictureBoxHour1.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (hour / 10).ToString() + ".bmp"); pictureBoxHour2.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (hour % 10).ToString() + ".bmp"); } if (minute <= 9) { pictureBoxMinute1.Image = Image.FromFile(@"..\..\..\DigitalNums\0.bmp"); pictureBoxMinute2.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (minute % 10).ToString() + ".bmp"); } else { } if (second <= 9) { pictureBoxSecond1.Image = Image.FromFile(@"..\..\..\DigitalNums\0.bmp"); pictureBoxSecond2.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (second % 10).ToString() + ".bmp"); } else { pictureBoxSecond1.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (second / 10).ToString() + ".bmp"); pictureBoxSecond2.Image = Image.FromFile(@"..\..\..\DigitalNums\" + (second % 10).ToString() + ".bmp"); } } //timer1的Tick事件响应方法 private void timer2_Tick(object sender, EventArgs e) { //让冒号闪烁起来 if (_colonFlag == true) { pictureBoxColon1.Image = Image.FromFile(@"..\..\..\DigitalNums\dot2.bmp"); pictureBoxColon2.Image = Image.FromFile(@"..\..\..\DigitalNums\dot2.bmp"); _colonFlag = false; } else { pictureBoxColon1.Image = Image.FromFile(@"..\..\..\DigitalNums\blank.bmp"); pictureBoxColon2.Image = Image.FromFile(@"..\..\..\DigitalNums\blank.bmp"); _colonFlag = true; } } //窗口的Move事件响应方法 private void Form1_Move(object sender, EventArgs e) { //停靠屏幕左右边框 int screenRight = Screen.PrimaryScreen.Bounds.Right; int formRight = this.Left + this.Width; if (Math.Abs(screenRight - formRight) <= 100) this.Left = screenRight - this.Size.Width; if (Math.Abs(this.Left) <= 100) this.Left = 0; //停靠屏幕上下边框 int screenBottom = Screen.PrimaryScreen.Bounds.Bottom; int formBottom = this.Top + this.Height; if (Math.Abs(screenBottom - formBottom) <= 60) this.Top = screenBottom - this.Size.Height; if (Math.Abs(this.Top) <= 100) this.Top = 0; } } }

Countdown

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 Countdown { public partial class Form1 : Form { public Form1() { InitializeComponent(); } //当前时间值（以秒为单位） private int _nowSecond = 0; //“开始”按钮的点击响应事件方法 private void buttonStart_Click(object sender, EventArgs e) { //判断是否输入时间值 if (textBoxSecond.Text != "") { //初始化当前的时间值（以秒为单位），从文本框获取时间值 _nowSecond = Convert.ToInt32(textBoxSecond.Text) * 10; //启动定时器 timer1.Enabled = true; timer2.Enabled = true; //启用或禁用按钮 buttonStart.Enabled = false; buttonPauseContinue.Enabled = true; buttonStop.Enabled = true; //显示冒号 labelColon1.Visible = true; labelColon2.Visible = true; } else { //给予提示 MessageBox.Show("请输入时间！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } } //“暂停/继续”按钮的点击响应事件方法 private void buttonPauseContinue_Click(object sender, EventArgs e) { //判断按钮为“暂停”按钮还是“继续”按钮 if (buttonPauseContinue.Text == "暂停") { //停止定时器 timer1.Enabled = false; timer2.Enabled = false; //改变按钮文字 buttonPauseContinue.Text = "继续"; } else { //启动定时器 timer1.Enabled = true; timer2.Enabled = true; //改变按钮文字 buttonPauseContinue.Text = "暂停"; } } //“停止”按钮的点击响应事件方法 private void buttonStop_Click(object sender, EventArgs e) { //停止定时器 timer1.Enabled = false; timer2.Enabled = false; //启用或禁用按钮 buttonStart.Enabled = true; buttonPauseContinue.Enabled = false; buttonStop.Enabled = false; //修改按钮文字 buttonPauseContinue.Text = "暂停"; } //timer1的Tick响应事件方法 private void timer1_Tick(object sender, EventArgs e) { //判断时间值是否是0 if(_nowSecond != 0) { //把当前时间值（以秒为单位）转为hh：mm：ss形式 int hour = _nowSecond / 36000; int minute = (_nowSecond % 36000) / 600; double second = (_nowSecond % 36000) % 600 / 10.0; //以hh：mm：ss形式显示当前时间值 if (hour <= 9) labelHour.Text = "0" + hour.ToString(); else labelHour.Text = hour.ToString(); if (minute <= 9) labelMinute.Text = "0" + minute.ToString(); else labelMinute.Text = minute.ToString(); if (second < 10) labelSecond.Text = "0" + second.ToString(); else labelSecond.Text = second.ToString(); //当前时间值（以秒为单位）减1 _nowSecond--; } else { //关闭定时器 timer1.Enabled = false; timer2.Enabled = false; //启用或禁用按钮 buttonStart.Enabled = true; buttonPauseContinue.Enabled = false; buttonStop.Enabled = false; //重置labelSecond的值 labelSecond.Text = "00.0"; //给予提示 MessageBox.Show("倒计时结束！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } } //timer2的Tick响应事件方法 private void timer2_Tick(object sender, EventArgs e) { //让冒号闪烁起来 if (labelColon1.Visible == true) { labelColon1.Visible = false; labelColon2.Visible = false; } else { labelColon1.Visible = true; labelColon2.Visible = true; } } //窗口的Move事件响应方法 private void Form1_Move(object sender, EventArgs e) { //停靠屏幕左右边框 int screenRight = Screen.PrimaryScreen.Bounds.Right; int formRight = this.Left + this.Width; if (Math.Abs(screenRight - formRight) <= 100) this.Left = screenRight - this.Size.Width; if (Math.Abs(this.Left) <= 100) this.Left = 0; //停靠屏幕上下边框 int screenBottom = Screen.PrimaryScreen.Bounds.Bottom; int formBottom = this.Top + this.Height; if (Math.Abs(screenBottom - formBottom) <= 60) this.Top = screenBottom - this.Size.Height; if (Math.Abs(this.Top) <= 100) this.Top = 0; } } }

完整文件下载地址

普通计时器 数码管计时器 倒计时