1、环境搭建和工程创建：
步骤一：安装visual studio2022
步骤二：新建工程
2、制作窗体部件
*踩过的坑：
（1）找不到工具箱控件，现象如下：
解决办法：
依次点击：工具栏->获取工具和功能->单个组件：安装3.5版本开发工具
若上述
办法不生效，继续检查.net桌面开发和asp.net开发是否勾选
最后点击顶部栏的：视图->工具箱就能显示出工具栏
3、界面布局设计
（1）界面设计如下：
4、具体功能函数
using system;
using system.windows.forms;
using static system.windows.forms.visualstyles.visualstyleelement;
namespace myproject01
{
public partial class form1 : form
{
uint16 timer_value = 0; //定时值
uint16 timer_count = 0; //定时器计数值
byte timer_status = 0; //定时器状态 0--停止 1 -- 定时状态 2 --暂停状态
public form1()
{
initializecomponent();
}
private void textbox1_textchanged(object sender, eventargs e)
{
}
private void button1_click(object sender, eventargs e)
{
}
private void label1_click(object sender, eventargs e)
{
}
private void button2_click(object sender, eventargs e)
{
}
private void flowlayoutpanel1_paint(object sender, painteventargs e)
{
}
private void label1_click_1(object sender, eventargs e)
{
}
private void label2_click(object sender, eventargs e)
{
}
private void label4_click(object sender, eventargs e)
{
}
private void form1_load(object sender, eventargs e)
{
byte i;
for (i = 0; i < 60; i )
{
//分钟和秒钟的组合框初始化
combobox1.items.add(i.tostring());
combobox2.items.add(i.tostring());
combobox1.text = "45"; //初始化为45分钟
combobox2.text = "0";
}
}
private void combobox1_selectedindexchanged(object sender, eventargs e)
{
}
private void textbox1_textchanged_1(object sender, eventargs e)
{
textbox1.readonly = true;
}
private void button1_click_1(object sender, eventargs e)
{
//定时器状态机函数
switch (timer_status)
{
case 0:
{
//获取定时时间，分钟*60 秒钟
timer_value = convert.touint16(combobox1.text, 10);
timer_value *= 60;
timer_value = convert.touint16(combobox2.text, 10);
if (timer_value > 0)
{
//开始定时任务
textbox1.text = timer_value.tostring() " 秒";
button1.text = "暂停计时";
button2.enabled = true;
combobox1.enabled = false; //关闭时间选择
combobox2 .enabled = false;
timer1.start();
timer_status = 1;
}
else
{
messagebox.show("定时时间不能为0，请重新输入", "警告");
//
}
//进度条初始化
progressbar1.value = 0;
progressbar1.maximum = timer_value;
break;
}
case 1:
{
timer1.stop();
timer_status = 2;
button1.text = "继续计时";
break;
}
case 2:
{
timer1.start();
timer_status = 1;
button1.text = "暂停计时";
break;
}
default:
{
break;
}
}
}
//定时按钮单击事件
private void timer1_tick(object sender, eventargs e)
{
timer_count ;
textbox1.text = timer_value-timer_count " 秒";
//更新进度条
progressbar1.value = timer_count;
if (timer_count == timer_value)
{
timer1.stop();
timer_count = 0;
system.media.systemsounds.asterisk.play();
button1.text = "计时结束";
messagebox.show ("定时时间到","提示");
button1.text = "开始定时";
combobox1.enabled = true; //关闭时间选择
combobox2.enabled = true;
combobox1.text = "45"; //初始化为45分钟
combobox2.text = "0";
button2.enabled = false;
timer_status = 0;
progressbar1.value = 0;
}
}
private void combobox2_selectedindexchanged(object sender, eventargs e)
{
}
private void button2_click_1(object sender, eventargs e)
{
if(timer_status > 0)
{
timer_value = 0; //定时值
timer_count = 0;
timer_status = 0;
progressbar1.value = 0;
textbox1.text= "0";
}
timer1.stop();
timer_count = 0;
button1.text = "开始定时";
combobox1.enabled = true; //关闭时间选择
combobox2.enabled = true;
combobox1.text = "45"; //初始化为45分钟
combobox2.text = "0";
button2.enabled = false;
timer_status = 0;
timer_value = 0;
}
}
}
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