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C#教程之C#实现在线点餐系统
本站最新发布 C#从入门到精通
试听地址 https://www.xin3721.com/eschool/CSharpxin3721/
试听地址 https://www.xin3721.com/eschool/CSharpxin3721/
这个是C#大作业,写作业很用心,写了很久,所以留存一下。不是现在的是之前的的期末作业,现在才想着整理一下
实现功能:
1、商家登录;客户的登录、注册。
2、商家界面实现了对菜单的增、删、改、查;还有订单的查看、查询、结账(删除订单)、查看已结账订单、关闭;退出系统。
3、用户界面实现了菜单的查看,查询,新建订单,选择餐桌,保存订单,增加菜品,退出。
C#语言实现在线点餐系统,具体功能如下图
登录界面
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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace MenuSystemWss { public partial class Form1 : Form { int dlsf=0; /* SqlConnection sqlcon; SqlCommand sqlcom; SqlDataReader sqlsdr;*/ BaseInfo baseinfo = new BaseInfo(); // BaseInfo.GkInfo gkinfo = new BaseInfo.GkInfo(); // public Form1() { InitializeComponent(); } public void dengluzt() { DataSet ds = null ; gkinfo.Gk_num = textBox1.Text.Trim(); ds = baseinfo.DengLu(gkinfo, "db_menu" ); gkinfo.Gk_zt = 1; gkinfo.Gk_apw = gkinfo.Gk_pw; gkinfo.Gk_name = ds.Tables[0].Rows[0][1].ToString().Trim(); baseinfo.Updatgk( this .gkinfo); } private void button1_Click( object sender, EventArgs e) { if (radioButton1.Checked) dlsf = 1; if (radioButton2.Checked) dlsf = 2; if (textBox1.Text.Trim() == "" ) { label3.Text = "账号不能为空" ; textBox1.Focus(); return ; } else if (textBox2.Text.Trim() == "" ) { label3.Text = "密码不能为空" ; textBox1.Focus(); return ; } else if (dlsf == 2) { try { DataSet ds = null ; gkinfo.Gk_num = textBox1.Text.Trim(); gkinfo.Gk_pw = textBox2.Text.Trim(); ds = baseinfo.DengLu(gkinfo, "db_menu" ); if (ds== null ||ds.Tables.Count == 0||(ds.Tables.Count == 1 && ds.Tables[0].Rows.Count == 0)) { MessageBox.Show( "用户名错误!" ); return ; } else if (ds.Tables[0].Rows[0][2].ToString().Trim() != textBox2.Text.Trim()) { MessageBox.Show( "密码错误" ); } else { MessageBox.Show( "登陆成功!" ); dengluzt(); gkfm fm = new gkfm(); fm.add (Convert.ToString(textBox1.Text)); fm.Show(); //this.Hide(); } } catch (Exception ee) { MessageBox.Show(ee.Message); } } else if (dlsf == 1) { if (textBox1.Text.Trim() == "1" && textBox2.Text.Trim() == "1" ) { MessageBox.Show( "登录成功" ); sjfm fm = new sjfm(); fm.Show(); // this.Hide(); } else { MessageBox.Show( "账号或密码错误!请重新输入!" ); return ; } } } private void label3_Click( object sender, EventArgs e) { zcfm fm = new zcfm(); fm.Show(); this .Hide(); } } } |
注册界面
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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Data.SqlClient; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace MenuSystemWss { public partial class zcfm : Form { BaseInfo baseinfo = new BaseInfo(); // BaseInfo.GkInfo gkinfo = new BaseInfo.GkInfo(); // /* SqlConnection sqlcon; SqlCommand sqlcom;*/ public zcfm() { InitializeComponent(); } private void label6_Click( object sender, EventArgs e) { Form1 fm = new Form1(); fm.Show(); this .Hide(); } private void button1_Click( object sender, EventArgs e) { if (textBox1.Text.Trim() == "" || textBox1.Text.Length != 11) { MessageBox.Show( "手机号错误,请规范填写" ); } else if (textBox2.Text.Trim() == "" ) { MessageBox.Show( "用户名错误,请规范填写4-8位" ); } else if (textBox3.Text.Trim() == "" || textBox3.Text.Length < 6 || textBox3.Text.Length > 8) { MessageBox.Show( "密码错误,请规范填写6-8位!" ); } else if (textBox4.Text.Trim() == "" ) { MessageBox.Show( "密码错误,请规范填写6-8位!" ); } else if (textBox3.Text.Trim() != textBox4.Text.Trim()) { MessageBox.Show( "两次输入密码必须一致!" ); } else { try { gkinfo.Gk_num = textBox1.Text.Trim(); gkinfo.Gk_name = textBox2.Text.Trim(); gkinfo.Gk_pw = textBox3.Text.Trim(); gkinfo.Gk_apw = textBox4.Text.Trim(); gkinfo.Gk_zt = 0; int id = baseinfo.AddGk(gkinfo); MessageBox.Show( "注册成功!" , "成功提示!" , MessageBoxButtons.OK, MessageBoxIcon.Information); } catch (Exception ee){ MessageBox.Show(ee.Message); } } } private void zcfm_Load( object sender, EventArgs e) { } } } |
商家界面:
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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 MenuSystemWss { public partial class sjfm : Form { public sjfm() { InitializeComponent(); } private void button1_Click( object sender, EventArgs e) { MenuShop fm = new MenuShop(); fm.Show(); } private void button3_Click( object sender, EventArgs e) { Application.Exit(); } private void button2_Click( object sender, EventArgs e) { glfm fm = new glfm(); fm.Show(); } } } |
菜单管理
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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 MenuSystemWss { public partial class MenuShop : Form { BaseInfo baseinfo = new BaseInfo(); BaseInfo.MenuInfo stockinfo = new BaseInfo.MenuInfo(); int kj_bz = 0; //控件状态标志 public MenuShop() { InitializeComponent(); } private void clearText() { Textboxnum.Text = string .Empty; TextboxName.Text = string .Empty; Textboxgg.Text = string .Empty; Textboxlx.Text = string .Empty; Textboxdj.Text = string .Empty; } private void cancelEnabled() { groupBox1.Enabled = false ; tlBtnAdd.Enabled = true ; BtnEdit.Enabled = true ; BtnDelete.Enabled = true ; BtnSave.Enabled = false ; BtnCancel.Enabled = false ; } private void LoadEnabled() { groupBox1.Enabled = false ; tlBtnAdd.Enabled = true ; BtnEdit.Enabled = true ; BtnDelete.Enabled = true ; BtnSave.Enabled = false ; BtnCancel.Enabled = false ; } private void editEnabled() { groupBox1.Enabled = true ; tlBtnAdd.Enabled = false ; BtnEdit.Enabled = false ; BtnDelete.Enabled = false ; BtnSave.Enabled = true ; BtnCancel.Enabled = true ; } private void AddEnabled() { Textboxdj.Text = "" ; Textboxgg.Text = "" ; Textboxnum.Text = "" ; TextboxName.Text = "" ; Textboxlx.Text = "" ; groupBox1.Enabled = true ; tlBtnAdd.Enabled = false ; BtnEdit.Enabled = false ; BtnDelete.Enabled = false ; BtnSave.Enabled = true ; BtnCancel.Enabled = true ; } private void MenuShop_Load( object sender, EventArgs e) { this .LoadEnabled(); dataGridView1.DataSource = baseinfo.GetAllmenu( "db_menu" ).Tables[0].DefaultView; //展示菜品信息 this .SetdataGridView1HeadText(); } private void SetdataGridView1HeadText() { dataGridView1.Columns[0].HeaderText = "菜品编号" ; dataGridView1.Columns[1].HeaderText = "菜品名称" ; dataGridView1.Columns[2].HeaderText = "菜品规格" ; dataGridView1.Columns[3].HeaderText = "菜品类型" ; dataGridView1.Columns[4].HeaderText = "菜品价格" ; } private void dataGridView1_CellClick( object sender, DataGridViewCellEventArgs e) { Textboxnum.Text = this .dataGridView1[0, dataGridView1.CurrentCell.RowIndex].Value.ToString(); //显示菜品编号 TextboxName.Text = this .dataGridView1[1, dataGridView1.CurrentCell.RowIndex].Value.ToString(); //显示菜品全称 Textboxgg.Text = this .dataGridView1[2, dataGridView1.CurrentCell.RowIndex].Value.ToString(); //显示菜品规格 Textboxlx.Text = this .dataGridView1[3, dataGridView1.CurrentCell.RowIndex].Value.ToString(); //显示菜品类型 Textboxdj.Text = this .dataGridView1[4, dataGridView1.CurrentCell.RowIndex].Value.ToString(); //显示菜品单价 } public void labletime() { labelsj.Text = System.DateTime.Now.ToString(); } private void timer1_Tick( object sender, EventArgs e) { labletime(); } private void tlBtnExit_Click( object sender, EventArgs e) { this .Close(); //Application.Exit(); } private void BtnDelete_Click( object sender, EventArgs e) { if (Textboxnum.Text.Trim() == string .Empty) { MessageBox.Show( "删除--菜品数据--失败!" , "错误提示!" , MessageBoxButtons.OK, MessageBoxIcon.Error); return ; } stockinfo.Menu_num = Textboxnum.Text.Trim(); int id = baseinfo.Deletemenu(stockinfo); MessageBox.Show( "删除--库存商品数据--成功!" , "成功提示!" , MessageBoxButtons.OK, MessageBoxIcon.Information); dataGridView1.DataSource = baseinfo.GetAllmenu( "db_menu" ).Tables[0].DefaultView; this .SetdataGridView1HeadText(); this .clearText(); //清空文本框 } private void BtnSave_Click( object sender, EventArgs e) { if (kj_bz == 0) { try { //添加数据 stockinfo.Menu_num =Textboxnum.Text; stockinfo.Menu_name = TextboxName.Text; stockinfo.Menu_gg = Textboxgg.Text; stockinfo.Menu_lx= Textboxlx.Text; stockinfo.Menu_dj = float .Parse( Textboxdj.Text.Trim()); //执行添加操作 int id = baseinfo.Addmenu(stockinfo); MessageBox.Show( "新增--库存商品数据--成功!" , "成功提示!" , MessageBoxButtons.OK, MessageBoxIcon.Information); } catch (Exception ex) { MessageBox.Show(ex.Message, "错误提示" , MessageBoxButtons.OK, MessageBoxIcon.Error); } } else { //修改数据 stockinfo.Menu_num = Textboxnum.Text; stockinfo.Menu_name = TextboxName.Text; stockinfo.Menu_gg = Textboxgg.Text; stockinfo.Menu_lx = Textboxlx.Text; stockinfo.Menu_dj = float .Parse(Textboxdj.Text.Trim()); //执行修改操作 int id = baseinfo.Updatemenu(stockinfo); MessageBox.Show( "修改--库存商品数据--成功!" , "成功提示!" , MessageBoxButtons.OK, MessageBoxIcon.Information); } dataGridView1.DataSource = baseinfo.GetAllmenu( "db_menu" ).Tables[0].DefaultView; this .SetdataGridView1HeadText(); this .cancelEnabled(); //设置各个按钮的可用状态 } private void BtnFind_Click( object sender, EventArgs e) { if (tlCmbStockType.Text == string .Empty) { MessageBox.Show( "查询类别不能为空!" , "错误提示!" , MessageBoxButtons.OK, MessageBoxIcon.Error); tlCmbStockType.Focus(); return ; } else if (tlCmbStockType.Text.Trim() == "全部" ) { dataGridView1.DataSource = baseinfo.GetAllmenu( "db_menu" ).Tables[0].DefaultView; this .SetdataGridView1HeadText(); return ; } else { DataSet ds = null ; stockinfo.Menu_lx = tlCmbStockType.Text; ds = baseinfo.FindmenuBylx(stockinfo, "db_menu" ); dataGridView1.DataSource = ds.Tables[0].DefaultView; this .SetdataGridView1HeadText(); } } private void BtnCancel_Click( object sender, EventArgs e) { this .cancelEnabled(); } private void BtnEdit_Click( object sender, EventArgs e) { kj_bz = 1; this .editEnabled(); } private void tlBtnAdd_Click( object sender, EventArgs e) { this .AddEnabled(); kj_bz = 0; } } } |
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