Hiển thị hóa đơn theo bàn cho phần mềm Quản lý quán cafe với C# Winform

CREATE DATABASE QuanLyQuanCafe
GO

USE QuanLyQuanCafe
GO

-- Food
-- Table
-- FoodCategory
-- Account
-- Bill
-- BillInfo

CREATE TABLE TableFood
(
	id INT IDENTITY PRIMARY KEY,
	name NVARCHAR(100) NOT NULL DEFAULT N'Bàn chưa có tên',
	status NVARCHAR(100) NOT NULL DEFAULT N'Trống'	-- Trống || Có người
)
GO

CREATE TABLE Account
(
	UserName NVARCHAR(100) PRIMARY KEY,	
	DisplayName NVARCHAR(100) NOT NULL DEFAULT N'Kter',
	PassWord NVARCHAR(1000) NOT NULL DEFAULT 0,
	Type INT NOT NULL  DEFAULT 0 -- 1: admin && 0: staff
)
GO

CREATE TABLE FoodCategory
(
	id INT IDENTITY PRIMARY KEY,
	name NVARCHAR(100) NOT NULL DEFAULT N'Chưa đặt tên'
)
GO

CREATE TABLE Food
(
	id INT IDENTITY PRIMARY KEY,
	name NVARCHAR(100) NOT NULL DEFAULT N'Chưa đặt tên',
	idCategory INT NOT NULL,
	price FLOAT NOT NULL DEFAULT 0
	
	FOREIGN KEY (idCategory) REFERENCES dbo.FoodCategory(id)
)
GO

CREATE TABLE Bill
(
	id INT IDENTITY PRIMARY KEY,
	DateCheckIn DATE NOT NULL DEFAULT GETDATE(),
	DateCheckOut DATE,
	idTable INT NOT NULL,
	status INT NOT NULL DEFAULT 0 -- 1: đã thanh toán && 0: chưa thanh toán
	
	FOREIGN KEY (idTable) REFERENCES dbo.TableFood(id)
)
GO

CREATE TABLE BillInfo
(
	id INT IDENTITY PRIMARY KEY,
	idBill INT NOT NULL,
	idFood INT NOT NULL,
	count INT NOT NULL DEFAULT 0
	
	FOREIGN KEY (idBill) REFERENCES dbo.Bill(id),
	FOREIGN KEY (idFood) REFERENCES dbo.Food(id)
)
GO

INSERT INTO dbo.Account
        ( UserName ,
          DisplayName ,
          PassWord ,
          Type
        )
VALUES  ( N'K9' , -- UserName - nvarchar(100)
          N'RongK9' , -- DisplayName - nvarchar(100)
          N'1' , -- PassWord - nvarchar(1000)
          1  -- Type - int
        )
INSERT INTO dbo.Account
        ( UserName ,
          DisplayName ,
          PassWord ,
          Type
        )
VALUES  ( N'staff' , -- UserName - nvarchar(100)
          N'staff' , -- DisplayName - nvarchar(100)
          N'1' , -- PassWord - nvarchar(1000)
          0  -- Type - int
        )
GO

CREATE PROC USP_GetAccountByUserName
@userName nvarchar(100)
AS 
BEGIN
	SELECT * FROM dbo.Account WHERE UserName = @userName
END
GO

EXEC dbo.USP_GetAccountByUserName @userName = N'k9' -- nvarchar(100)

GO

CREATE PROC USP_Login
@userName nvarchar(100), @passWord nvarchar(100)
AS
BEGIN
	SELECT * FROM dbo.Account WHERE UserName = @userName AND PassWord = @passWord
END
GO

-- thêm bàn
DECLARE @i INT = 0

WHILE @i <= 10
BEGIN
	INSERT dbo.TableFood ( name)VALUES  ( N'Bàn ' + CAST(@i AS nvarchar(100)))
	SET @i = @i + 1
END
GO

CREATE PROC USP_GetTableList
AS SELECT * FROM dbo.TableFood
GO

UPDATE dbo.TableFood SET STATUS = N'Có người' WHERE id = 9

EXEC dbo.USP_GetTableList
GO

-- thêm category
INSERT dbo.FoodCategory
        ( name )
VALUES  ( N'Hải sản'  -- name - nvarchar(100)
          )
INSERT dbo.FoodCategory
        ( name )
VALUES  ( N'Nông sản' )
INSERT dbo.FoodCategory
        ( name )
VALUES  ( N'Lâm sản' )
INSERT dbo.FoodCategory
        ( name )
VALUES  ( N'Sản sản' )
INSERT dbo.FoodCategory
        ( name )
VALUES  ( N'Nước' )

-- thêm món ăn
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Mực một nắng nước sa tế', -- name - nvarchar(100)
          1, -- idCategory - int
          120000)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Nghêu hấp xả', 1, 50000)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Dú dê nướng sữa', 2, 60000)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Heo rừng nướng muối ớt', 3, 75000)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Cơm chiên mushi', 4, 999999)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'7Up', 5, 15000)
INSERT dbo.Food
        ( name, idCategory, price )
VALUES  ( N'Cafe', 5, 12000)

-- thêm bill
INSERT	dbo.Bill
        ( DateCheckIn ,
          DateCheckOut ,
          idTable ,
          status
        )
VALUES  ( GETDATE() , -- DateCheckIn - date
          NULL , -- DateCheckOut - date
          3 , -- idTable - int
          0  -- status - int
        )
        
INSERT	dbo.Bill
        ( DateCheckIn ,
          DateCheckOut ,
          idTable ,
          status
        )
VALUES  ( GETDATE() , -- DateCheckIn - date
          NULL , -- DateCheckOut - date
          4, -- idTable - int
          0  -- status - int
        )
INSERT	dbo.Bill
        ( DateCheckIn ,
          DateCheckOut ,
          idTable ,
          status
        )
VALUES  ( GETDATE() , -- DateCheckIn - date
          GETDATE() , -- DateCheckOut - date
          5 , -- idTable - int
          1  -- status - int
        )

-- thêm bill info
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 5, -- idBill - int
          1, -- idFood - int
          2  -- count - int
          )
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 5, -- idBill - int
          3, -- idFood - int
          4  -- count - int
          )
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 5, -- idBill - int
          5, -- idFood - int
          1  -- count - int
          )
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 6, -- idBill - int
          1, -- idFood - int
          2  -- count - int
          )
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 6, -- idBill - int
          6, -- idFood - int
          2  -- count - int
          )
INSERT	dbo.BillInfo
        ( idBill, idFood, count )
VALUES  ( 7, -- idBill - int
          5, -- idFood - int
          2  -- count - int
          )         
          
GO
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using QuanLyQuanCafe.DAO;
using QuanLyQuanCafe.DTO;
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 QuanLyQuanCafe
{
    public partial class fTableManager : Form
    {
        public fTableManager()
        {
            InitializeComponent();

            LoadTable();
        }

        #region Method
        void LoadTable()
        {
            List<Table> tableList = TableDAO.Instance.LoadTableList();

            foreach (Table item in tableList)
            {
                Button btn = new Button() { Width = TableDAO.TableWidth, Height = TableDAO.TableHeight};
                btn.Text = item.Name + Environment.NewLine + item.Status;
                btn.Click += btn_Click;
                btn.Tag = item;

                switch (item.Status)
                {
                    case "Trống":
                        btn.BackColor = Color.Aqua;
                        break;
                    default:
                        btn.BackColor = Color.LightPink;
                        break;
                }

                flpTable.Controls.Add(btn);
            }
        }

        void ShowBill(int id)
        {
            lsvBill.Items.Clear();
            List<QuanLyQuanCafe.DTO.Menu> listBillInfo = MenuDAO.Instance.GetListMenuByTable(id);

            foreach (QuanLyQuanCafe.DTO.Menu item in listBillInfo)
            {
                ListViewItem lsvItem = new ListViewItem(item.FoodName.ToString());
                lsvItem.SubItems.Add(item.Count.ToString());
                lsvItem.SubItems.Add(item.Price.ToString());
                lsvItem.SubItems.Add(item.TotalPrice.ToString());

                lsvBill.Items.Add(lsvItem);
            }
        }

        #endregion


        #region Events
        void btn_Click(object sender, EventArgs e)
        {
            int tableID = ((sender as Button).Tag as Table).ID;
            ShowBill(tableID);
        }
        private void đăngXuấtToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void thôngTinCáNhânToolStripMenuItem_Click(object sender, EventArgs e)
        {
            fAccountProfile f = new fAccountProfile();
            f.ShowDialog();
        }

        private void adminToolStripMenuItem_Click(object sender, EventArgs e)
        {
            fAdmin f = new fAdmin();
            f.ShowDialog();
        }
        #endregion
    }
}
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namespace QuanLyQuanCafe
{
    partial class fTableManager
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.adminToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.thôngTinTàiKhoảnToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.thôngTinCáNhânToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.đăngXuấtToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.panel2 = new System.Windows.Forms.Panel();
            this.lsvBill = new System.Windows.Forms.ListView();
            this.panel3 = new System.Windows.Forms.Panel();
            this.cbSwitchTable = new System.Windows.Forms.ComboBox();
            this.btnSwitchTable = new System.Windows.Forms.Button();
            this.nmDisCount = new System.Windows.Forms.NumericUpDown();
            this.btnDiscount = new System.Windows.Forms.Button();
            this.btnCheckOut = new System.Windows.Forms.Button();
            this.panel4 = new System.Windows.Forms.Panel();
            this.nmFoodCount = new System.Windows.Forms.NumericUpDown();
            this.btnAddFood = new System.Windows.Forms.Button();
            this.cbFood = new System.Windows.Forms.ComboBox();
            this.cbCategory = new System.Windows.Forms.ComboBox();
            this.flpTable = new System.Windows.Forms.FlowLayoutPanel();
            this.columnHeader1 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.columnHeader2 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.columnHeader3 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.columnHeader4 = ((System.Windows.Forms.ColumnHeader)(new System.Windows.Forms.ColumnHeader()));
            this.menuStrip1.SuspendLayout();
            this.panel2.SuspendLayout();
            this.panel3.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.nmDisCount)).BeginInit();
            this.panel4.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.nmFoodCount)).BeginInit();
            this.SuspendLayout();
            // 
            // menuStrip1
            // 
            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.adminToolStripMenuItem,
            this.thôngTinTàiKhoảnToolStripMenuItem});
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(797, 24);
            this.menuStrip1.TabIndex = 1;
            this.menuStrip1.Text = "menuStrip1";
            // 
            // adminToolStripMenuItem
            // 
            this.adminToolStripMenuItem.Name = "adminToolStripMenuItem";
            this.adminToolStripMenuItem.Size = new System.Drawing.Size(55, 20);
            this.adminToolStripMenuItem.Text = "Admin";
            this.adminToolStripMenuItem.Click += new System.EventHandler(this.adminToolStripMenuItem_Click);
            // 
            // thôngTinTàiKhoảnToolStripMenuItem
            // 
            this.thôngTinTàiKhoảnToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
            this.thôngTinCáNhânToolStripMenuItem,
            this.đăngXuấtToolStripMenuItem});
            this.thôngTinTàiKhoảnToolStripMenuItem.Name = "thôngTinTàiKhoảnToolStripMenuItem";
            this.thôngTinTàiKhoảnToolStripMenuItem.Size = new System.Drawing.Size(123, 20);
            this.thôngTinTàiKhoảnToolStripMenuItem.Text = "Thông tin tài khoản";
            // 
            // thôngTinCáNhânToolStripMenuItem
            // 
            this.thôngTinCáNhânToolStripMenuItem.Name = "thôngTinCáNhânToolStripMenuItem";
            this.thôngTinCáNhânToolStripMenuItem.Size = new System.Drawing.Size(171, 22);
            this.thôngTinCáNhânToolStripMenuItem.Text = "Thông tin cá nhân";
            this.thôngTinCáNhânToolStripMenuItem.Click += new System.EventHandler(this.thôngTinCáNhânToolStripMenuItem_Click);
            // 
            // đăngXuấtToolStripMenuItem
            // 
            this.đăngXuấtToolStripMenuItem.Name = "đăngXuấtToolStripMenuItem";
            this.đăngXuấtToolStripMenuItem.Size = new System.Drawing.Size(171, 22);
            this.đăngXuấtToolStripMenuItem.Text = "Đăng xuất";
            this.đăngXuấtToolStripMenuItem.Click += new System.EventHandler(this.đăngXuấtToolStripMenuItem_Click);
            // 
            // panel2
            // 
            this.panel2.Controls.Add(this.lsvBill);
            this.panel2.Location = new System.Drawing.Point(447, 85);
            this.panel2.Name = "panel2";
            this.panel2.Size = new System.Drawing.Size(338, 315);
            this.panel2.TabIndex = 2;
            // 
            // lsvBill
            // 
            this.lsvBill.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
            this.columnHeader1,
            this.columnHeader2,
            this.columnHeader3,
            this.columnHeader4});
            this.lsvBill.GridLines = true;
            this.lsvBill.Location = new System.Drawing.Point(3, 3);
            this.lsvBill.Name = "lsvBill";
            this.lsvBill.Size = new System.Drawing.Size(332, 309);
            this.lsvBill.TabIndex = 0;
            this.lsvBill.UseCompatibleStateImageBehavior = false;
            this.lsvBill.View = System.Windows.Forms.View.Details;
            // 
            // panel3
            // 
            this.panel3.Controls.Add(this.cbSwitchTable);
            this.panel3.Controls.Add(this.btnSwitchTable);
            this.panel3.Controls.Add(this.nmDisCount);
            this.panel3.Controls.Add(this.btnDiscount);
            this.panel3.Controls.Add(this.btnCheckOut);
            this.panel3.Location = new System.Drawing.Point(447, 406);
            this.panel3.Name = "panel3";
            this.panel3.Size = new System.Drawing.Size(338, 52);
            this.panel3.TabIndex = 3;
            // 
            // cbSwitchTable
            // 
            this.cbSwitchTable.FormattingEnabled = true;
            this.cbSwitchTable.Location = new System.Drawing.Point(3, 28);
            this.cbSwitchTable.Name = "cbSwitchTable";
            this.cbSwitchTable.Size = new System.Drawing.Size(75, 21);
            this.cbSwitchTable.TabIndex = 6;
            // 
            // btnSwitchTable
            // 
            this.btnSwitchTable.Location = new System.Drawing.Point(3, 3);
            this.btnSwitchTable.Name = "btnSwitchTable";
            this.btnSwitchTable.Size = new System.Drawing.Size(75, 26);
            this.btnSwitchTable.TabIndex = 5;
            this.btnSwitchTable.Text = "Chuyển bàn";
            this.btnSwitchTable.UseVisualStyleBackColor = true;
            // 
            // nmDisCount
            // 
            this.nmDisCount.Location = new System.Drawing.Point(133, 29);
            this.nmDisCount.Name = "nmDisCount";
            this.nmDisCount.Size = new System.Drawing.Size(74, 20);
            this.nmDisCount.TabIndex = 4;
            this.nmDisCount.TextAlign = System.Windows.Forms.HorizontalAlignment.Center;
            // 
            // btnDiscount
            // 
            this.btnDiscount.Location = new System.Drawing.Point(133, 3);
            this.btnDiscount.Name = "btnDiscount";
            this.btnDiscount.Size = new System.Drawing.Size(75, 26);
            this.btnDiscount.TabIndex = 4;
            this.btnDiscount.Text = "Giảm giá";
            this.btnDiscount.UseVisualStyleBackColor = true;
            // 
            // btnCheckOut
            // 
            this.btnCheckOut.Location = new System.Drawing.Point(260, 3);
            this.btnCheckOut.Name = "btnCheckOut";
            this.btnCheckOut.Size = new System.Drawing.Size(75, 46);
            this.btnCheckOut.TabIndex = 3;
            this.btnCheckOut.Text = "Thanh toán";
            this.btnCheckOut.UseVisualStyleBackColor = true;
            // 
            // panel4
            // 
            this.panel4.Controls.Add(this.nmFoodCount);
            this.panel4.Controls.Add(this.btnAddFood);
            this.panel4.Controls.Add(this.cbFood);
            this.panel4.Controls.Add(this.cbCategory);
            this.panel4.Location = new System.Drawing.Point(447, 27);
            this.panel4.Name = "panel4";
            this.panel4.Size = new System.Drawing.Size(338, 52);
            this.panel4.TabIndex = 4;
            // 
            // nmFoodCount
            // 
            this.nmFoodCount.Location = new System.Drawing.Point(296, 19);
            this.nmFoodCount.Minimum = new decimal(new int[] {
            100,
            0,
            0,
            -2147483648});
            this.nmFoodCount.Name = "nmFoodCount";
            this.nmFoodCount.Size = new System.Drawing.Size(39, 20);
            this.nmFoodCount.TabIndex = 3;
            this.nmFoodCount.Value = new decimal(new int[] {
            1,
            0,
            0,
            0});
            // 
            // btnAddFood
            // 
            this.btnAddFood.Location = new System.Drawing.Point(214, 3);
            this.btnAddFood.Name = "btnAddFood";
            this.btnAddFood.Size = new System.Drawing.Size(75, 46);
            this.btnAddFood.TabIndex = 2;
            this.btnAddFood.Text = "Thêm món";
            this.btnAddFood.UseVisualStyleBackColor = true;
            // 
            // cbFood
            // 
            this.cbFood.FormattingEnabled = true;
            this.cbFood.Location = new System.Drawing.Point(3, 28);
            this.cbFood.Name = "cbFood";
            this.cbFood.Size = new System.Drawing.Size(205, 21);
            this.cbFood.TabIndex = 1;
            // 
            // cbCategory
            // 
            this.cbCategory.FormattingEnabled = true;
            this.cbCategory.Location = new System.Drawing.Point(3, 3);
            this.cbCategory.Name = "cbCategory";
            this.cbCategory.Size = new System.Drawing.Size(205, 21);
            this.cbCategory.TabIndex = 0;
            // 
            // flpTable
            // 
            this.flpTable.AutoScroll = true;
            this.flpTable.Location = new System.Drawing.Point(12, 30);
            this.flpTable.Name = "flpTable";
            this.flpTable.Size = new System.Drawing.Size(429, 428);
            this.flpTable.TabIndex = 5;
            // 
            // columnHeader1
            // 
            this.columnHeader1.Text = "Tên món";
            this.columnHeader1.Width = 133;
            // 
            // columnHeader2
            // 
            this.columnHeader2.Text = "Số lượng";
            // 
            // columnHeader3
            // 
            this.columnHeader3.Text = "Đơn giá";
            this.columnHeader3.Width = 54;
            // 
            // columnHeader4
            // 
            this.columnHeader4.Text = "Thành tiền";
            this.columnHeader4.Width = 81;
            // 
            // fTableManager
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(797, 470);
            this.Controls.Add(this.flpTable);
            this.Controls.Add(this.panel4);
            this.Controls.Add(this.panel3);
            this.Controls.Add(this.panel2);
            this.Controls.Add(this.menuStrip1);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "fTableManager";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Phần mềm quản lý quán cafe";
            this.menuStrip1.ResumeLayout(false);
            this.menuStrip1.PerformLayout();
            this.panel2.ResumeLayout(false);
            this.panel3.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.nmDisCount)).EndInit();
            this.panel4.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.nmFoodCount)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.MenuStrip menuStrip1;
        private System.Windows.Forms.ToolStripMenuItem adminToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem thôngTinTàiKhoảnToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem thôngTinCáNhânToolStripMenuItem;
        private System.Windows.Forms.ToolStripMenuItem đăngXuấtToolStripMenuItem;
        private System.Windows.Forms.Panel panel2;
        private System.Windows.Forms.ListView lsvBill;
        private System.Windows.Forms.Panel panel3;
        private System.Windows.Forms.Panel panel4;
        private System.Windows.Forms.NumericUpDown nmFoodCount;
        private System.Windows.Forms.Button btnAddFood;
        private System.Windows.Forms.ComboBox cbFood;
        private System.Windows.Forms.ComboBox cbCategory;
        private System.Windows.Forms.ComboBox cbSwitchTable;
        private System.Windows.Forms.Button btnSwitchTable;
        private System.Windows.Forms.NumericUpDown nmDisCount;
        private System.Windows.Forms.Button btnDiscount;
        private System.Windows.Forms.Button btnCheckOut;
        private System.Windows.Forms.FlowLayoutPanel flpTable;
        private System.Windows.Forms.ColumnHeader columnHeader1;
        private System.Windows.Forms.ColumnHeader columnHeader2;
        private System.Windows.Forms.ColumnHeader columnHeader3;
        private System.Windows.Forms.ColumnHeader columnHeader4;
    }
}
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using QuanLyQuanCafe.DTO;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QuanLyQuanCafe.DAO
{
    public class TableDAO
    {
        private static TableDAO instance;

        public static TableDAO Instance
        {
            get { if (instance == null) instance = new TableDAO(); return TableDAO.instance; }
            private set { TableDAO.instance = value; }
        }

        public static int TableWidth = 90;
        public static int TableHeight = 90;

        private TableDAO() { }

        public List<Table> LoadTableList()
        {
            List<Table> tableList = new List<Table>();

            DataTable data = DataProvider.Instance.ExecuteQuery("USP_GetTableList");

            foreach (DataRow item in data.Rows)
            {
                Table table = new Table(item);
                tableList.Add(table);
            }

            return tableList;
        }
    }
}
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using QuanLyQuanCafe.DTO;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QuanLyQuanCafe.DAO
{
    public class MenuDAO
    {
        private static MenuDAO instance;

        public static MenuDAO Instance
        {
            get { if (instance == null)instance = new MenuDAO(); return MenuDAO.instance; }
            private set { MenuDAO.instance = value; }
        }

        private MenuDAO() { }

        public List<Menu> GetListMenuByTable(int id)
        {
            List<Menu> listMenu = new List<Menu>();

            string query = "SELECT f.name, bi.count, f.price, f.price*bi.count AS totalPrice FROM dbo.BillInfo AS bi, dbo.Bill AS b, dbo.Food AS f WHERE bi.idBill = b.id AND bi.idFood = f.id AND b.idTable = " + id;
            DataTable data = DataProvider.Instance.ExecuteQuery(query);

            foreach (DataRow item in data.Rows)
            {
                Menu menu = new Menu(item);
                listMenu.Add(menu);
            }

            return listMenu;
        }
    }
}
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using QuanLyQuanCafe.DTO;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QuanLyQuanCafe.DAO
{
    public class BillDAO
    {
        private static BillDAO instance;

        public static BillDAO Instance
        {
            get { if (instance == null) instance = new BillDAO(); return BillDAO.instance; }
            private set { BillDAO.instance = value; }
        }

        private BillDAO() { }

        /// <summary>
        /// Thành công: bill ID
        /// thất bại: -1
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public int GetUncheckBillIDByTableID(int id)
        {
            DataTable data = DataProvider.Instance.ExecuteQuery("SELECT * FROM dbo.Bill WHERE idTable = " + id +" AND status = 0");

            if (data.Rows.Count > 0)
            {
                Bill bill = new Bill(data.Rows[0]);
                return bill.ID;
            }

            return -1;
        }
    }
}
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using QuanLyQuanCafe.DTO;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace QuanLyQuanCafe.DAO
{
    public class BillInfoDAO
    {
        private static BillInfoDAO instance;

        public static BillInfoDAO Instance
        {
            get { if (instance == null) instance = new BillInfoDAO(); return BillInfoDAO.instance; }
            private set { BillInfoDAO.instance = value; }
        }

        private BillInfoDAO() { }

        public List<BillInfo> GetListBillInfo(int id)
        {
            List<BillInfo> listBillInfo = new List<BillInfo>();

            DataTable data = DataProvider.Instance.ExecuteQuery("SELECT * FROM dbo.BillInfo WHERE idBill = " + id);

            foreach (DataRow item in data.Rows)
            {
                BillInfo info = new BillInfo(item);
                listBillInfo.Add(info);
            }

            return listBillInfo;
        }
    }
}
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