[C#上位机学习]定时器设计 

  1 namespace 定时器设计
  2 {
  3     public partial class Form1 : Form
  4     {
  5         UInt16 Timer_Value = 0;//定时值
  6         UInt16 Timer_Count = 0;//定时器计数器
  7         byte Timer_Status = 0;//定时器状态
  8         //0=停止状态   1定时状态   2为暂停状态
  9         public Form1()
 10         {
 11             InitializeComponent();
 12         }
 13        // 窗体装载事件
 14         private void Form1_Load(object sender, EventArgs e)
 15         {
 16             //分钟、秒钟组合框初始化
 17             byte i;//声明一个字节变量 i
 18             for(i=0;i<60;i++)
 19             {
 20                 comboBox1.Items.Add(i.ToString()); //往组合框里面添加60个数值
 21                 comboBox2.Items.Add(i.ToString());//往组合框里面添加60个数值
 22             }
 23             //分钟、秒钟组合框默认设为0
 24             comboBox1.Text = "0";
 25             comboBox2.Text = "0";
 26         }
 27         //定时按钮单击事件
 28         private void button1_Click(object sender, EventArgs e)
 29         {
 30             switch (Timer_Status)     //定时器状态设置
 31             {
 32                 case 0:
 33                     {
 34                         //获取定时器的时间
 35                         Timer_Value = Convert.ToUInt16(comboBox1.Text, 10);  //将10进制的组合框中的内容转换为无符号整数型赋值到Value变量
 36                         Timer_Value *=60;//将获取的值每一次乘60，将分钟转换为秒
 37                         Timer_Value += Convert.ToUInt16(comboBox2.Text, 10);//将分钟加上组合框2中的十进制整数，不断相加分钟数
 38                         if (Timer_Value > 0)         //如果分钟数>0
 39                         {
 40                             //开始定时任务
 41                             textBox1.Text = Timer_Value.ToString() + " S";     //文本框里就显示value的值+s
 42                             button1.Text = "暂停计时";           //按钮1显示为暂停计时
 43                             button2.Enabled = true;            //按钮2使能
 44                             comboBox1.Enabled = false;      //组合框1编辑失能
 45                             comboBox2.Enabled = false;//组合框2编辑失能
 46                             //更新定时器状态
 47                             Timer_Status = 1;     //将定时器状态置1
 48                             //设置进度条
 49                             progressBar1.Value = 0;              //初始化进度条为0
 50                             progressBar1.Maximum = Timer_Value;    //进度条最大值为定时器为总秒数
 51                             //定时器使能
 52                             timer1.Start();           //定时器使能
 53                         }
 54                         else
 55                         {
 56                             System.Media.SystemSounds.Beep.Play();//调用系统提示音
 57                             MessageBox.Show("定时时间不能为0", "提示");      //此状态为定时时间为<0或等于0弹出信息提示框 
 58                             
 59                         }
 60                         break;
 61                     }
 62                 case 1:
 63                     {
 64                         timer1.Stop();                   
 65                         Timer_Status = 2;
 66                         button1.ForeColor = Color.Green;    //字体显示绿色
 67                         button1.Text = "继续计时";
 68                         break;
 69                     }
 70                 case 2:
 71                     {
 72                         timer1.Start();
 73                         Timer_Status = 1;
 74                         button1.ForeColor = Color.Green;    //字体显示绿色
 75                         button1.Text = "暂停计时";
 76                         break;
 77                     }
 78                 default:
 79                     {
 80                         
 81                         break;
 82                     }
 83             }
 84 
 85                 
 86             }
 87 
 88         private void timer1_Tick(object sender, EventArgs e)
 89         {
 90             //定时器加1
 91             Timer_Count++;
 92             //更新剩余时间
 93             textBox1.Text = (Timer_Value - Timer_Count).ToString() + " S";
 94             //更新进度条
 95             progressBar1.Value = Timer_Count;
 96             if (Timer_Count == Timer_Value)
 97             {
 98                 timer1.Stop();
 99                 Timer_Count = 0;
100                 Timer_Status = 0;
101 
102                 button1.Text = "计时结束";
103                 System.Media.SystemSounds.Asterisk.Play();//调用系统提示音
104                 MessageBox.Show("定时时间到", "提示");
105                 button1.ForeColor = Color.Black;    //字体显示黑色
106                 button1.Text = "开始定时";
107                 textBox1.Text = "";
108                 button2.Enabled = false;
109                 comboBox1.Enabled = true;
110                 comboBox2.Enabled = true;
111                 comboBox1.Text = "0";
112                 comboBox2.Text = "0";
113                 //进度条归0
114                 progressBar1.Value = 0;
115             }
116         }
117 
118         private void button2_Click(object sender, EventArgs e)
119         {
120             timer1.Stop();
121             Timer_Count = 0;
122             Timer_Status = 0;
123             System.Media.SystemSounds.Asterisk.Play();//调用系统提示音
124             MessageBox.Show("定时停止", "提示");
125             button1.ForeColor = Color.Black;    //字体显示黑色
126             button1.Text = "开始定时";
127           
128             textBox1.Text = "";
129             button2.Enabled = false;
130             comboBox1.Enabled = true;
131             comboBox2.Enabled = true;
132             comboBox1.Text = "0";
133             comboBox2.Text = "0";
134 
135             //进度条归0
136             progressBar1.Value = 0;
137         }
138 
139         
140     }
141      }
142

 

posted @ 2021-11-25 20:38  2020年2月1日13点30分  阅读(16)  评论(0)    收藏  举报