C#如何实现简单的点餐系统
发表于：2025-02-07 作者：千家信息网编辑
千家信息网最后更新 2025年02月07日，这篇"C#如何实现简单的点餐系统"除了程序员外大部分人都不太理解，今天小编为了让大家更加理解"C#如何实现简单的点餐系统"，给大家总结了以下内容，具有一定借鉴价值，内容详细步骤清晰，细节处理妥当，希望
千家信息网最后更新 2025年02月07日C#如何实现简单的点餐系统
这篇"C#如何实现简单的点餐系统"除了程序员外大部分人都不太理解，今天小编为了让大家更加理解"C#如何实现简单的点餐系统"，给大家总结了以下内容，具有一定借鉴价值，内容详细步骤清晰，细节处理妥当，希望大家通过这篇文章有所收获，下面让我们一起来看看具体内容吧。
1.登录注册模块
登录分为用户登录和管理员登录（店家），管理员有且只有一个账号可以登录。用户登录需要先注册，注册必须用手机号注册。
登录界面效果图
登录主要就是判断，多加些判断就行了
登录代码展示:
#region 窗体效果 public class Win32 { public const Int32 AW_HOR_POSITIVE = 0x00000001; // 从左到右打开窗口 public const Int32 AW_HOR_NEGATIVE = 0x00000002; // 从右到左打开窗口 public const Int32 AW_VER_POSITIVE = 0x00000004; // 从上到下打开窗口 public const Int32 AW_VER_NEGATIVE = 0x00000008; // 从下到上打开窗口 public const Int32 AW_CENTER = 0x00000010; //若使用了AW_HIDE标志，则使窗口向内重叠；若未使用AW_HIDE标志，则使窗口向外扩展。 public const Int32 AW_HIDE = 0x00010000; //隐藏窗口，缺省则显示窗口。 public const Int32 AW_ACTIVATE = 0x00020000; //激活窗口。在使用了AW_HIDE标志后不要使用这个标志。 public const Int32 AW_SLIDE = 0x00040000; //使用滑动类型。缺省则为滚动动画类型。当使用AW_CENTER标志时，这个标志就被忽略。 public const Int32 AW_BLEND = 0x00080000; //使用淡出效果。只有当hWnd为顶层窗口的时候才可以使用此标志。 [DllImport("user32.dll", CharSet = CharSet.Auto)] public static extern bool AnimateWindow( IntPtr hwnd, // handle to window int dwTime, // duration of animation int dwFlags // animation type ); } #endregion ValidCode validCode = new ValidCode(5, ValidCode.CodeType.Numbers);//实例化这个对象 //窗体加载 private void Login_Load(object sender, EventArgs e) { picValidCode.Image = Bitmap.FromStream(validCode.CreateCheckCodeImage());//点击图片更换验证码 Win32.AnimateWindow(this.Handle,500, Win32.AW_VER_POSITIVE);//窗体出现效果 } //验证码图片 private void picValidCode_Click(object sender, EventArgs e) { picValidCode.Image = Bitmap.FromStream(validCode.CreateCheckCodeImage());//点击图片更换验证码 } //注册 private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { Enroll EN = new Enroll(); this.Hide(); EN.ShowDialog(); Application.ExitThread(); } //登录按钮 private void LoginButton_Click(object sender, EventArgs e) { Saveusername.name = Username.Text; string sql = string.Format("select * from UserList where UserID='{0}'and UserPassword='{1} '", Username.Text, password.Text); SqlDataReader reader = DBHelper.GetDataReader(sql); if (Username.Text == "") { MessageBox.Show("请输入用户名！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } else if (password.Text == "") { MessageBox.Show("请输入密码！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } else if (!this.txtValidCode.Text.Equals(validCode.CheckCode))//验证是否输入正确 { MessageBox.Show(" 请输入正确的验证码!", this.Text); this.txtValidCode.Focus(); this.txtValidCode.Text = ""; reader.Close(); return; } else if (reader.Read()) { Saveusername.ID = reader["ID"].ToString();//获取ID用于个人中心修改信息 reader.Close(); if (Saveusername.name=="Sweet") { 管理员界面.GLY gLY = new 管理员界面.GLY(); this.Hide(); gLY.ShowDialog(); Application.ExitThread(); } XMB xMB = new XMB(); this.Hide(); xMB.ShowDialog(); Application.ExitThread(); } else { MessageBox.Show("用户名或密码输入错误！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Error); } reader.Close(); picValidCode.Image = Bitmap.FromStream(validCode.CreateCheckCodeImage());//点击图片更换验证码 } //忘记密码 private void linkLabel1_LinkClicked_1(object sender, LinkLabelLinkClickedEventArgs e) { ForgetPwd forget = new ForgetPwd(); this.Hide(); forget.ShowDialog(); Application.ExitThread(); } #region 用于窗体移动 private Point mPoint;//定义一个位置信息Point用于存储鼠标位置 private void Login_MouseDown(object sender, MouseEventArgs e) { mPoint = new Point(e.X, e.Y); } private void Login_MouseMove(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { this.Location = new Point(this.Location.X + e.X - mPoint.X, this.Location.Y + e.Y - mPoint.Y); } } #endregion private void Login_FormClosed(object sender, FormClosedEventArgs e) { Win32.AnimateWindow(this.Handle, 500, Win32.AW_BLEND|Win32.AW_HIDE); } private void pictureBox3_Click(object sender, EventArgs e) { this.Close(); } private void pictureBox4_Click(object sender, EventArgs e) { this.WindowState = FormWindowState.Minimized;//最小化 }图片验证码代码展示:
public class ValidCode { #region Private Fields private const double PI = 3.1415926535897932384626433832795; private const double PI2 = 6.283185307179586476925286766559; //private readonly int _wordsLen = 4; private int _len; private CodeType _codetype; private readonly Single _jianju = (float)18.0; private readonly Single _height = (float)24.0; private string _checkCode; #endregion #region Public Property public string CheckCode { get { return _checkCode; } } #endregion #region Constructors /// /// public constructors /// /// 验证码长度 /// 验证码类型：字母、数字、字母+ 数字 public ValidCode(int len, CodeType ctype) { this._len = len; this._codetype = ctype; } #endregion #region Public Field public enum CodeType { Words, Numbers, Characters, Alphas } #endregion #region Private Methods private string GenerateNumbers() { string strOut = ""; System.Random random = new Random(); for (int i = 0; i < _len; i++) { string num = Convert.ToString(random.Next(10000) % 10); strOut += num; } return strOut.Trim(); } private string GenerateCharacters() { string strOut = ""; System.Random random = new Random(); for (int i = 0; i < _len; i++) { string num = Convert.ToString((char)(65 + random.Next(10000) % 26)); strOut += num; } return strOut.Trim(); } // private string GenerateAlphas() { string strOut = ""; string num = ""; System.Random random = new Random(); for (int i = 0; i < _len; i++) { if (random.Next(500) % 2 == 0) { num = Convert.ToString(random.Next(10000) % 10); } else { num = Convert.ToString((char)(65 + random.Next(10000) % 26)); } strOut += num; } return strOut.Trim(); } private System.Drawing.Bitmap TwistImage(Bitmap srcBmp, bool bXDir, double dMultValue, double dPhase) { System.Drawing.Bitmap destBmp = new Bitmap(srcBmp.Width, srcBmp.Height); // 将位图背景填充为白色 System.Drawing.Graphics graph = System.Drawing.Graphics.FromImage(destBmp); graph.FillRectangle(new SolidBrush(System.Drawing.Color.White), 0, 0, destBmp.Width, destBmp.Height); graph.Dispose(); double dBaseAxisLen = bXDir ? (double)destBmp.Height : (double)destBmp.Width; for (int i = 0; i < destBmp.Width; i++) { for (int j = 0; j < destBmp.Height; j++) { double dx = 0; dx = bXDir ? (PI2 * (double)j) / dBaseAxisLen : (PI2 * (double)i) / dBaseAxisLen; dx += dPhase; double dy = Math.Sin(dx); // 取得当前点的颜色 int nOldX = 0, nOldY = 0; nOldX = bXDir ? i + (int)(dy * dMultValue) : i; nOldY = bXDir ? j : j + (int)(dy * dMultValue); System.Drawing.Color color = srcBmp.GetPixel(i, j); if (nOldX >= 0 && nOldX < destBmp.Width && nOldY >= 0 && nOldY < destBmp.Height) { destBmp.SetPixel(nOldX, nOldY, color); } } } return destBmp; } #endregion #region Public Methods public Stream CreateCheckCodeImage() { string checkCode; switch (_codetype) { case CodeType.Alphas: checkCode = GenerateAlphas(); break; case CodeType.Numbers: checkCode = GenerateNumbers(); break; case CodeType.Characters: checkCode = GenerateCharacters(); break; default: checkCode = GenerateAlphas(); break; } this._checkCode = checkCode; MemoryStream ms = null; // if (checkCode == null || checkCode.Trim() == String.Empty) return null; Bitmap image = new System.Drawing.Bitmap((int)Math.Ceiling((checkCode.Length * _jianju)), (int)_height); Graphics g = Graphics.FromImage(image); try { Random random = new Random(); g.Clear(Color.White); // 画图片的背景噪音线 for (int i = 0; i < 18; i++) { int x1 = random.Next(image.Width); int x2 = random.Next(image.Width); int y1 = random.Next(image.Height); int y2 = random.Next(image.Height); g.DrawLine(new Pen(Color.FromArgb(random.Next()), 1), x1, y1, x2, y2); } Font font = new System.Drawing.Font("Times New Roman", 14, System.Drawing.FontStyle.Bold); LinearGradientBrush brush = new LinearGradientBrush(new Rectangle(0, 0, image.Width, image.Height), Color.Blue, Color.DarkRed, 1.2f, true); if (_codetype != CodeType.Words) { for (int i = 0; i < checkCode.Length; i++) { g.DrawString(checkCode.Substring(i, 1), font, brush, 2 + i * _jianju, 1); } } else { g.DrawString(checkCode, font, brush, 2, 2); } // 画图片的前景噪音点 for (int i = 0; i < 150; i++) { int x = random.Next(image.Width); int y = random.Next(image.Height); image.SetPixel(x, y, Color.FromArgb(random.Next())); } // 画图片的波形滤镜效果 if (_codetype != CodeType.Words) { image = TwistImage(image, true, 3, 1); } // 画图片的边框线 g.DrawRectangle(new Pen(Color.Silver), 0, 0, image.Width - 1, image.Height - 1); ms = new System.IO.MemoryStream(); image.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); } finally { g.Dispose(); image.Dispose(); } return ms; } #endregion注册界面效果图
注册界面代码展示
短信验证码，用接口就能实现
TimeSpan dtTo = new TimeSpan(0, 0, 60);//设置计时器的开始时间 int value;//用来存储随机数 public Enroll() { InitializeComponent(); } //获取短信验证码 private void CodeButton_Click(object sender, EventArgs e) { Regex rx = new Regex(@"^0{0,1}(13[0-9]|15[0-9]|15[0-9]|18[0-9]|17[0-9])[0-9]{8}$"); if (!rx.IsMatch(EnrollTel.Text)) { EnrollTel.Text = ""; MessageBox.Show("手机号格式不正确，请重新输入", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } else { Random rad = new Random();//实例化随机数产生器rad； value = rad.Next(1000, 10000);//用rad生成大于等于1000，小于等于9999的随机数； Note.NoTe(EnrollTel.Text, value); timer1.Start(); dtTo = new TimeSpan(0, 0, 60); } } //时间控件用来实现60秒倒计时 private void timer1_Tick_1(object sender, EventArgs e) { CodeButton.Enabled = false; dtTo = dtTo.Subtract(new TimeSpan(0, 0, 1));//每隔一秒减一 CodeButton.Text = "(" + dtTo.Seconds.ToString() + ")" + "重新获取"; if (dtTo.TotalSeconds == 0.0)//当倒计时完毕 { this.CodeButton.Enabled = true; CodeButton.Text = "点击获取验证码"; this.timer1.Stop(); timer1.Dispose(); } } //注册按钮 private void FinishButton_Click(object sender, EventArgs e) { bool Bool = Fac(); if (Bool) { string type = "普通用户"; string sex = ""; if (RadioMan.Checked)//判断单选按钮的text { sex = RadioMan.Text; } else if (RadioWoman.Checked) { sex = RadioWoman.Text; } string sql = string.Format("insert into UserList values('{0}','{1}','{2}','{3}','{4}','{5}')", EnrollUser.Text, EnrollPwd.Text, sex, EnrollTel.Text, EnrollAddress.Text, type); bool sqlinsert = DBHelper.ExecuteNonQuery(sql); if (sqlinsert) { DialogResult result = MessageBox.Show("注册成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Question); this.Hide(); Login LG = new Login(); LG.ShowDialog(); } } else { return; } } /// /// 用于注册界面里格式的判断 /// /// 忘记密码界面效果图
下面为用户界面的展示
简单介绍一下：由于菜品是有很多的而且不确定数量，所以必须动态加载，不能拖图片控件等。
用户功能实现思路：首先要知道每个用户只能看自己的，所以在登录时候就必须用一个东西接收用户输入的名字，以便在主界面显示出与该用户相匹配的数据。
购物车界面
购物车首先要有一个购物车表用来存储用户添加的商品，当用户结账以后，购物车表中该用户的信息就应全部清除。然后为该用户生成订单（存入信息到订单表），并将用户购买的商品存入订单详情表中。
动态加载菜品代码展示
private void XMB_Load(object sender, EventArgs e) { /*SetStyle(ControlStyles.UserPaint, true); SetStyle(ControlStyles.AllPaintingInWmPaint, true); // 禁止擦除背景. SetStyle(ControlStyles.DoubleBuffer, true); // 双缓冲*/ linke_热菜.LinkColor = Color.Gray; Win32.AnimateWindow(this.Handle, 500, Win32.AW_CENTER);//窗体出现效果 Order_pl.Visible = false; Or_panel1.Visible = false;//隐藏订单控件 menu_all_全部.AutoScroll = true;//添加滚动条 this.toolStripStatusLabel1.Font = new Font("微软雅黑", 12, FontStyle.Bold); toolStripStatusLabel1.Text = string.Format("欢迎"{0}"使用Sweet点餐系统！ ", Saveusername.name); this.timer2.Start(); string sql = "select * from Food_table"; DataSet ds = DBHelper.GetDataSet(sql); int xx = 0; int yy = 0; for (int i = 0; i < ds.Tables[0].Rows.Count; i++) { Label FoodName = new Label(); Label FoodPrice = new Label(); PictureBox picture = new PictureBox(); Button button = new Button();//创建控件 FoodName.Name = "FoodName_" + i; FoodPrice.Name = "FoodPrice_" + i; picture.Name = "picture_" + i; button.Name = ds.Tables[0].Rows[i]["FoodID"].ToString();//加入购物车按钮命名为菜品表的FoodID FoodName.Text = ds.Tables[0].Rows[i]["FoodName"].ToString(); FoodPrice.Text = "¥" + ds.Tables[0].Rows[i]["FoodPrice"].ToString() + "/份";//控件text属性赋值 button.Text = "加入购物车"; FoodName.AutoSize = true; FoodPrice.AutoSize = true; button.AutoSize = true; FoodName.Font = new Font("微软雅黑", 11); FoodPrice.Font = new Font("微软雅黑", 11); button.Font = new Font("微软雅黑", 6); button.BackColor = Color.Gray; button.ForeColor = Color.Transparent; button.FlatStyle = FlatStyle.Flat; button.Size = new Size(60, 10); picture.Location = new Point(100 * xx, 20 + yy); FoodName.Location = new Point(100 * xx, 100 + yy); FoodPrice.Location = new Point(100 * xx, 120 + yy); button.Location = new Point(100 * xx, 140 + yy);//控件定位 picture.Image = Image.FromFile(Application.StartupPath + @"\FoodPhoto\" + ds.Tables[0].Rows[i]["PhotoName"].ToString());//显示图片，路径为可执行文件所在文件夹的FoodPhoto文件夹内的图片 picture.SizeMode = PictureBoxSizeMode.StretchImage; picture.Size = new Size(150, 80); picture.BorderStyle = BorderStyle.FixedSingle; button.Cursor = Cursors.Hand; button.Click += new EventHandler(this.Button_Click); menu_all_全部.Controls.Add(FoodName); menu_all_全部.Controls.Add(FoodPrice); menu_all_全部.Controls.Add(picture); menu_all_全部.Controls.Add(button);//把控件绑定到panel中 xx++; if (xx++ >= 4) { xx = 0; yy += 180; } } }动态加载菜品解决窗体控件闪烁问题代码展示
protected override CreateParams CreateParams//解决窗体控件闪烁问题 { get { CreateParams cp = base.CreateParams; cp.ExStyle |= 0x02000000; return cp; }}加入购物车按钮代码展示
#region 购物车 private void 购物车_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { // 禁止用户改变DataGridView1的所有列的列宽 dataGridView1.AllowUserToResizeColumns = false; //禁止用户改变DataGridView1所有行的行高 dataGridView1.AllowUserToResizeRows = false; dataGridView1.Columns[0].ReadOnly = true; //禁止用户编辑第一列 dataGridView1.Columns[1].ReadOnly = true; //禁止用户编辑第二列 dataGridView1.Columns[2].ReadOnly = true;//禁止用户编辑第三列 this.dataGridView1.AllowUserToResizeColumns = false; //禁止用户拖动标题宽度 dataGridView1.AutoGenerateColumns = false;//取消自动生成列 dataGridView1.RowHeadersVisible = false; //隐藏前面空白选择部分 string sql = string.Format("select FoodName,ShoppingCount,ShoppingPrice,ShoppingID from Food_table join Shopping_table on Food_table.FoodID=Shopping_table.FoodID join UserList on '{0}'=Shopping_table.UserID where UserList.UserID='{1}'", Saveusername.name,Saveusername.name);//三表查询 dataGridView1.DataSource = DBHelper.GetDataSet(sql).Tables[0]; double SumPrice = 0;//用来存储总金额 if (DBHelper.GetDataSet(sql).Tables[0].Rows.Count > 0) { for (int i = 0; i < DBHelper.GetDataSet(sql).Tables[0].Rows.Count; i++) { SumPrice += double.Parse(DBHelper.GetDataSet(sql).Tables[0].Rows[i][2].ToString()); } Money_label.Text = "¥" + SumPrice.ToString() + "元"; } dataGridView1.ClearSelection(); //取消默认选中 if (show_shopping_pl.Visible == true) { show_shopping_pl.Visible = false; } else { show_shopping_pl.Visible = true; } if (Or_panel1.Visible == true) { Or_panel1.Visible = false; } if (Order_pl.Visible == true) { Order_pl.Visible = false; } } //清空购物车 private void delete_label_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { DialogResult result = MessageBox.Show("是否清空购物车", "提示信息", MessageBoxButtons.OKCancel, MessageBoxIcon.Asterisk); if (result == DialogResult.OK) { string sql = string.Format("delete from Shopping_table where UserID='{0}'", Saveusername.name); if (DBHelper.ExecuteNonQuery(sql)) { sql = string.Format("select FoodName,ShoppingCount,ShoppingPrice,ShoppingID from Food_table join Shopping_table on Food_table.FoodID=Shopping_table.FoodID join UserList on '{0}'=Shopping_table.UserID ", Saveusername.name); dataGridView1.DataSource = DBHelper.GetDataSet(sql); dataGridView1.AllowUserToAddRows = false; Money_label.Text = "¥0元"; MessageBox.Show("成功清空购物车！", "提示", MessageBoxButtons.OK); } } } #endregion主界面结账功能界面
结账部分代码展示
private void Yes_Order_Load(object sender, EventArgs e) { Or_label1.Text = "["+Saveusername.name+"]" + ">确认购买"; dataGridView1.RowHeadersVisible = false; //隐藏前面空白选择部分 // // 禁止用户改变DataGridView1的所有列的列宽 //dataGridView1.AllowUserToResizeColumns = false; 禁止用户改变DataGridView1所有行的行高 //dataGridView1.AllowUserToResizeRows = false; dataGridView1.Columns[0].ReadOnly = true; //禁止用户编辑第一列 dataGridView1.Columns[1].ReadOnly = true; //禁止用户编辑第二列 dataGridView1.Columns[2].ReadOnly = true;//禁止用户编辑第三列 this.dataGridView1.AllowUserToResizeColumns = false; //禁止用户拖动标题宽度 dataGridView1.AutoGenerateColumns = false;//取消自动生成列 dataGridView1.RowHeadersVisible = false; //隐藏前面空白选择部分 string sql = string.Format("select FoodName,ShoppingCount,ShoppingPrice,ShoppingID from Food_table join Shopping_table on Food_table.FoodID=Shopping_table.FoodID join UserList on '{0}'=Shopping_table.UserID where UserList.UserID='{1}'", Saveusername.name,Saveusername.name);//三表查询 dataGridView1.DataSource = DBHelper.GetDataSet(sql).Tables[0]; SumPrice = 0;//用来存储总金额 if (DBHelper.GetDataSet(sql).Tables[0].Rows.Count > 0) { for (int i = 0; i < DBHelper.GetDataSet(sql).Tables[0].Rows.Count; i++) { SumPrice += double.Parse(DBHelper.GetDataSet(sql).Tables[0].Rows[i][2].ToString()); } Money_label.Text = "¥" + SumPrice.ToString() + "元"; } dataGridView1.ClearSelection(); //取消默认选中 string sql_1 = string.Format("select * from UserList where UserID='{0}'",Saveusername.name); DataSet ds = DBHelper.GetDataSet(sql_1); Name_label.Text = ds.Tables[0].Rows[0]["UserID"].ToString()+":"; Tel_label.Text = ds.Tables[0].Rows[0]["UserTel"].ToString(); Address_label.Text = ds.Tables[0].Rows[0]["UserAddress"].ToString(); Yes_Money_label.Text = Money_label.Text; } private void Yes_pay_btn_Click(object sender, EventArgs e) { if (Address_label.Text=="") { MessageBox.Show("地址信息不完整，请填写完整！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } string Order_Data = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss"); //下单日期 string OrderNumber = DateTime.Now.ToString("yyyyMMddhhmmss");//订单编号 string sql = string.Format("select * from Shopping_table where UserID='{0}'",Saveusername.name);//查询购物车表 DataTable table_shopping = DBHelper.GetDataSet(sql).Tables[0]; if (table_shopping.Rows.Count>0)//购物车有数据就创建订单 { string sql_order = string.Format("insert into Order_table values('{0}','{1}','{2}','{3}','{4}','{5}')",OrderNumber,Saveusername.name,SumPrice,Address_label.Text,Order_Data,Tel_label.Text);//创建订单 string sql_state = string.Format("insert into OrderState_table values('{0}','{1}')",OrderNumber,"等待确认");//订单状态 if (DBHelper.ExecuteNonQuery(sql_order)&&DBHelper.ExecuteNonQuery(sql_state)) { sql_order = string.Format("select top 1 * from Order_table where UserID='{0}' order by OrderID desc",Saveusername.name); DataTable table_order = DBHelper.GetDataTable(sql_order); for (int i = 0; i < table_shopping.Rows.Count; i++)//把数据逐条插入订单详情表 {string sql_datailde = string.Format("insert into Datailedorder_table values('{0}','{1}','{2}','{3}')", int.Parse(table_shopping.Rows[i]["FoodID"].ToString()),int.Parse(table_shopping.Rows[i]["ShoppingCount"].ToString()),double.Parse(table_shopping.Rows[i]["ShoppingPrice"].ToString()),int.Parse(table_order.Rows[0]["OrderID"].ToString())); //try //{DBHelper.ExecuteNonQuery(sql_datailde); //} /* catch (Exception) { MessageBox.Show("异常"); return }*/ } string sql_delete = string.Format("delete from Shopping_table where UserID='{0}'",Saveusername.name); DBHelper.ExecuteNonQuery(sql_delete);//创建订单后清空购物车 DialogResult result= MessageBox.Show("支付成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); if (result==DialogResult.OK) { string sql_select = string.Format("select * from Shopping_table where UserID='{0}'",Saveusername.name); dataGridView1.DataSource = DBHelper.GetDataSet(sql_select).Tables[0]; Money_label.Text = "¥0元"; Yes_Money_label.Text = "¥0元"; XMB.GetXMB.Money_label.Text = "¥0元"; Order_Form order_ = new Order_Form(); XMB.GetXMB.Or_from(order_); return; } } } else { MessageBox.Show("未选择菜品", "提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk); } }订单功能界面
点击订单，出现订单详情
订单功能部分代码
private void Order_Form_Load(object sender, EventArgs e) { OR_panel.AutoScroll = true;//添加滚动条 int xx = 0; int yy = 0; string sql = string.Format("select * from Order_table where UserID='{0}'",Saveusername.name); DataTable Or_table = DBHelper.GetDataTable(sql);DataTable State = DBHelper.GetDataTable(string.Format("select OrderState from OrderState_table join Order_table on Order_table.OrderNumber=OrderState_table.OrderNumber where Order_table.UserID='{0}'",Saveusername.name)); for (int i = 0; i < Or_table.Rows.Count; i++) { Label OrderNumber = new Label();//编号 Label ShoppingPrice = new Label();//价格 Label SaleDate = new Label();//时间 Label OrderState = new Label();//状态 Label sweet = new Label(); Panel panel = new Panel(); PictureBox Db = new PictureBox(); //实例化一个控件 Db.Name = "Db_PictureBox" + i;//设定名称 OrderNumber.Name = "Label" + i; ShoppingPrice.Name = "Label" + i; SaleDate.Name = "Label" + i; OrderState.Name = "Label" + i; sweet.Name = "Label" + i; panel.Name = "Panel" + i;//设定名称 panel.Text = Or_table.Rows[i]["OrderID"].ToString();//把订单ID赋给控件的Text，以便取消订单 SaleDate.Text = Or_table.Rows[i]["SaleDate"].ToString(); ShoppingPrice.Text = " ¥ " + Or_table.Rows[i]["ShoppingPrice"].ToString(); OrderNumber.Text = "订单编号： " + Or_table.Rows[i]["OrderNumber"].ToString(); sweet.Text = "Sweet点餐"; OrderState.Text = State.Rows[i]["OrderState"].ToString(); sweet.Location = new Point(150,30); ShoppingPrice.Location = new Point(480,30); OrderState.Location = new Point(595,30); SaleDate.Location = new Point(150,70); OrderNumber.Location = new Point(450,70); Db.Location = new Point(15, 10 + yy);//设定位置 panel.Location = new Point(5, 0 + yy);//设定位置 sweet.AutoSize = true; OrderState.AutoSize = true; ShoppingPrice.AutoSize = true; SaleDate.AutoSize = true; OrderNumber.AutoSize = true; Db.Image = Image.FromFile(Application.StartupPath + @"\FoodPhoto\" + "sezhi.png"); Db.SizeMode = PictureBoxSizeMode.StretchImage; //设定图像如何显示 sweet.Font = new Font("微软雅黑", 11); OrderNumber.Font = new Font("微软雅黑", 11); OrderState.Font = new Font("微软雅黑", 11); ShoppingPrice.Font = new Font("微软雅黑", 11); SaleDate.Font = new Font("微软雅黑", 11); Db.Size = new Size(80, 80); panel.Size = new Size(683, 100); Db.BorderStyle = BorderStyle.FixedSingle; //设置边框样式 panel.BorderStyle = BorderStyle.FixedSingle; //设置边框样式 panel.BackColor = Color.White; SaleDate.ForeColor = Color.Red; ShoppingPrice.ForeColor = Color.Red; OrderNumber.ForeColor = Color.Green; OrderState.ForeColor = Color.Green; panel.Cursor = Cursors.Hand; OR_panel.Controls.Add(Db); OR_panel.Controls.Add(panel); panel.Controls.Add(OrderState); panel.Controls.Add(sweet); panel.Controls.Add(OrderNumber); panel.Controls.Add(SaleDate); panel.Controls.Add(ShoppingPrice); panel.Click += new EventHandler(this.panel1_MouseClick); //添加单击事件 panel.MouseEnter += new EventHandler(this.panel1_MouseEnter); //添加单击事件 panel.MouseLeave += new EventHandler(this.panel1_MouseLeave); //添加单击事件 xx++; if (xx++ >= 1) { yy += 110; //aa += 10; } } }接下来是管理员界面展示
1.菜品管理界面
菜品管理添加菜品关键代码
private void Food_in_tbn_Click(object sender, EventArgs e) { if (Fag() == false) return; string FilePath = Application.StartupPath + @"\FoodPhoto";//获取可执行文件所在位置的FoodPhoto文件夹路径 if (Directory.Exists(FilePath) == false) { //判断文件夹是否存在如果不存在创建文件夹 Directory.CreateDirectory(FilePath);//创建文件夹 } string FileName = DateTime.Now.ToString("yyyyMMddhhmmss") + new Random().Next(1000, 9999); //以当前时间和1000到9999的随机数合起来作为文件的名字 FileName += nj.Substring(nj.LastIndexOf("."));//截取图片的后缀名 File.Copy(nj, FilePath + @"\" + FileName);//把图片复制到FoodPhoto文件夹 string SQLst = string.Format("insert into Food_table values('{0}','{1}','{2}','{3}')", Add_Food_tb.Text,Add_money_tb.Text,Add_type_ctb.Text, FileName); if (DBHelper.ExecuteNonQuery(SQLst)) { MessageBox.Show("菜品添加成功", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { MessageBox.Show("保存失败", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } } public static string nj; public static string name; private void pictureBox1_Click(object sender, EventArgs e) { //打开资源管理器选择图片 OpenFileDialog openFileDialog1 = new OpenFileDialog(); nj = ""; name = ""; if (openFileDialog1.ShowDialog() == DialogResult.OK) { nj = openFileDialog1.FileName; pictureBox1.Image = Image.FromFile(nj); }}2.订单管理界面
主要实现思路：动态加载控件，控件定位，查询数据库，修改表信息
3.销售统计界面
点击确认订单后会生成一个订单，效果图如下:
代码展示
private void Button_Click(object sender, EventArgs e) { Button button = (Button)sender;//将触发此事件的对象转换为该对象 OrderID = int.Parse(button.Name.ToString()); string FilePath = @"D:\订单票据";//获取可执行文件所在位置的FoodPhoto文件夹路径 if (Directory.Exists(FilePath) == false) { //判断文件夹是否存在如果不存在创建文件夹 Directory.CreateDirectory(FilePath);//创建文件夹 } string sql_12 = string.Format("select * from Order_table where OrderID='{0}'", OrderID); DataTable piao = DBHelper.GetDataTable(sql_12); for (int i = 0; i < piao.Rows.Count; i++) { StreamWriter sw = new StreamWriter(@"D:\订单票据\Sweet点餐"+piao.Rows[0]["OrderNumber"].ToString()+".txt"); string a = "订单编号："+piao.Rows[i]["OrderNumber"].ToString(); string b = "订单内容："; sw.WriteLine(a); sw.WriteLine("-------------------------------------------"); sw.WriteLine(b); string sql_13 = "select Food_table.FoodName,Datailedorder_table.ShoppingCount,Datailedorder_table.ShoppingPrice from Order_table join Datailedorder_table on Datailedorder_table.OrderID=Order_table.OrderID join Food_table on Food_table.FoodID=Datailedorder_table.FoodID where Order_table.OrderNumber='" + piao.Rows[i]["OrderNumber"] + "'";//查找需要的菜品名称，菜品购买的数量，每一种菜品购买的总金额 DataTable table = DBHelper.GetDataTable(sql_13); for (int j = 0; j < table.Rows.Count; j++) { string FoodName = table.Rows[i]["FoodName"].ToString(); string FoodCount = table.Rows[i]["ShoppingCount"].ToString(); string ShoppingPrice = table.Rows[i]["ShoppingPrice"].ToString(); sw.Write(" {0}",FoodName); sw.Write(" x{0}", FoodCount); sw.WriteLine(" {0}",ShoppingPrice); } sw.WriteLine("-------------------------------------------"); string sum = "总计："+piao.Rows[i]["ShoppingPrice"].ToString(); string c = "联系地址："; string Address = "联系地址："+piao.Rows[i]["Address"].ToString(); string User = "联系人："+piao.Rows[i]["UserID"].ToString(); string tel = "联系电话："+piao.Rows[i]["UserTel"].ToString(); sw.WriteLine(sum); sw.WriteLine(); sw.WriteLine(c); sw.WriteLine("-------------------------------------------"); sw.WriteLine(User); sw.WriteLine(tel); sw.WriteLine(Address); sw.Close(); }C#是什么
C#是一个简单、通用、面向对象的编程语言，它由微软Microsoft开发，继承了C和C++强大功能，并且去掉了一些它们的复杂特性，C#综合了VB简单的可视化操作和C++的高运行效率，以其强大的操作能力、优雅的语法风格、创新的语言特性和便捷的面向组件编程从而成为.NET开发的首选语言，但它不适用于编写时间急迫或性能非常高的代码，因为C#缺乏性能极高的应用程序所需要的关键功能。
感谢您的阅读，希望您对"C#如何实现简单的点餐系统"这一关键问题有了一定的理解，具体使用情况还需要大家自己动手实验使用过才能领会，快去试试吧，如果想阅读更多相关知识点的文章，欢迎关注行业资讯频道！
用户
订单
界面
提示
验证
图片
文件
购物车
登录
购物
代码
菜品
输入
效果
文件夹
管理
窗体
C#
控件
标志
数据库的安全要保护哪些东西
数据库安全各自的含义是什么
生产安全数据库录入
数据库的安全性及管理
数据库安全策略包含哪些
海淀数据库安全审计系统
建立农村房屋安全信息数据库
易用的数据库客户端支持安全管理
连接数据库失败ssl安全错误
数据库的锁怎样保障安全
linux服务器端口指定命令
福建火山软件开发平台是哪种语言
室内设计方案数据库
树立正确的网络安全观宣传标语
魔方基因数据库
交友软件开发方面的管理能力
数据库怎么辨别是什么约束
中国网安网络安全事业部
我的世界2b2t服务器招管理员
新浪财经网络安全
eos配置数据库找不到驱动
数据库如何关闭空间锁
汽车行业软件开发
计算机三级数据库含金量高不
知识图谱数据库构建论文
马云会不会软件开发
奉贤区无线网络技术创新服务
阿里数据库上线
网络安全渗透测试的职业方向
软件开发与设计人才
安卓网络安全证书怎么删除
检测芯片网络安全
数据库中除
专利库数据库系统卢建强
雅安app软件开发
麻醉数据库怎么分析
数据库创建表代码null
实习软件开发项目情况
计算机网络安全技术培训学院
虚拟服务器在哪
