C#桌面應用開發：番茄定時器
1、環境搭建和工程創建：
步驟一：安裝visual studio2022
步驟二：新建工程
2、制作窗體部件
*踩過的坑：
（1）找不到工具箱控件，現象如下：
解決辦法：
依次點擊：工具欄->獲取工具和功能->單個組件：安裝3.5版本開發工具
若上述
辦法不生效，繼續檢查.NET桌面開發和ASP.NET開發是否勾選
最后點擊頂部欄的：視圖->工具箱就能顯示出工具欄
3、界面布局設計
（1）界面設計如下：
4、具體功能函數
using System;
using System.Windows.Forms;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;namespace MyProject01
{public partial class Form1 : Form{UInt16 Timer_Value = 0; //定時值UInt16 Timer_Count = 0; //定時器計數值byte Timer_Status = 0; //定時器狀態 0--停止 1 -- 定時狀態 2 --暫停狀態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++){//分鐘和秒鐘的組合框初始化comboBox1.Items.Add(i.ToString());comboBox2.Items.Add(i.ToString());comboBox1.Text = "45"; //初始化為45分鐘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){//定時器狀態機函數switch (Timer_Status){case 0:{//獲取定時時間，分鐘*60+秒鐘Timer_Value = Convert.ToUInt16(comboBox1.Text, 10);Timer_Value *= 60;Timer_Value += Convert.ToUInt16(comboBox2.Text, 10);if (Timer_Value > 0){//開始定時任務textBox1.Text = Timer_Value.ToString() + " 秒";button1.Text = "暫停計時";button2.Enabled = true;comboBox1.Enabled = false; //關閉時間選擇comboBox2 .Enabled = false;timer1.Start();Timer_Status = 1;}else{MessageBox.Show("定時時間不能為0，請重新輸入", "警告");//}//進度條初始化progressBar1.Value = 0;progressBar1.Maximum = Timer_Value;break;}case 1:{timer1.Stop();Timer_Status = 2;button1.Text = "繼續計時";break;}case 2:{timer1.Start();Timer_Status = 1;button1.Text = "暫停計時";break;}default:{break;}}}//定時按鈕單擊事件private void timer1_Tick(object sender, EventArgs e){Timer_Count++;textBox1.Text = Timer_Value-Timer_Count + " 秒";//更新進度條progressBar1.Value = Timer_Count;if (Timer_Count == Timer_Value){timer1.Stop();Timer_Count = 0;System.Media.SystemSounds.Asterisk.Play();button1.Text = "計時結束";MessageBox.Show ("定時時間到","提示");button1.Text = "開始定時";comboBox1.Enabled = true; //關閉時間選擇comboBox2.Enabled = true;comboBox1.Text = "45"; //初始化為45分鐘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; //定時值Timer_Count = 0;Timer_Status = 0;progressBar1.Value = 0;textBox1.Text= "0";}timer1.Stop();Timer_Count = 0;button1.Text = "開始定時";comboBox1.Enabled = true; //關閉時間選擇comboBox2.Enabled = true;comboBox1.Text = "45"; //初始化為45分鐘comboBox2.Text = "0";button2.Enabled = false;Timer_Status = 0;Timer_Value = 0;}}
}
)
