c#餐廳點餐系統源碼：

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 點餐系統 {public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){int left = Screen.PrimaryScreen.Bounds.Width / 2 - this.Width / 2;int top = Screen.PrimaryScreen.Bounds.Height / 2 - this.Height / 2;this.Location = new Point(left, top);//1.在加載的時候統計菜的數量，每樣菜都有對應的序號按鈕//循環遍歷foreach (Control control in flowLayoutPanel1.Controls){Button btn = new Button();//Controls是每樣菜的整個panel容器btn.Tag = control;foreach (Control item in control.Controls){if (item.Tag.ToString()=="index"){btn.Text = item.Text;}}btn.Size = new Size(50, 30);btn.Font = new Font("", 15);flowLayoutPanel14.Controls.Add(btn);//添加按鈕事件btn.Click += Btn_Click;}}int count = 0;private void Btn_Click(object sender, EventArgs e){ //sender參數：事件的發起者，這是哪個對象觸發的事件，那么這個sender就是誰Button clickbtn = (Button)sender;Control menu = (Control)clickbtn.Tag;Label label = new Label();foreach (Control item in menu.Controls){if (item.Tag.ToString()=="name"){label.Text = item.Text;}if (item.Tag.ToString()=="money"){count += int.Parse(item.Text); }}label.Font = new Font("",15);flowLayoutPanel15.Controls.Add(label);label39.Text = count + "￥";}} }

運行結果

總結

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