C#实现在线点餐系统
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
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Data.SqlClient;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclassForm1:Form
{
intdlsf=0;
/*SqlConnectionsqlcon;
SqlCommandsqlcom;
SqlDataReadersqlsdr;*/
BaseInfobaseinfo=newBaseInfo();//
BaseInfo.GkInfogkinfo=newBaseInfo.GkInfo();//
publicForm1()
{
InitializeComponent();
}
publicvoiddengluzt()
{
DataSetds=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);
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
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
{
DataSetds=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();
gkfmfm=newgkfm();
fm.add(Convert.ToString(textBox1.Text));
fm.Show();
//this.Hide();
}
}
catch(Exceptionee)
{
MessageBox.Show(ee.Message);
}
}
else
if(dlsf==1)
{
if(textBox1.Text.Trim()=="1"&&textBox2.Text.Trim()=="1")
{
MessageBox.Show("登录成功");
sjfmfm=newsjfm();
fm.Show();
//this.Hide();
}
else{MessageBox.Show("账号或密码错误！请重新输入！");return;}
}
}
privatevoidlabel3_Click(objectsender,EventArgse)
{
zcfmfm=newzcfm();
fm.Show();
this.Hide();
}
}
}
注册界面
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Data.SqlClient;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclasszcfm:Form
{
BaseInfobaseinfo=newBaseInfo();//
BaseInfo.GkInfogkinfo=newBaseInfo.GkInfo();//
/*SqlConnectionsqlcon;
SqlCommandsqlcom;*/
publiczcfm()
{
InitializeComponent();
}
privatevoidlabel6_Click(objectsender,EventArgse)
{
Form1fm=newForm1();
fm.Show();
this.Hide();
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
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;
intid=baseinfo.AddGk(gkinfo);
MessageBox.Show("注册成功！","成功提示！",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
catch(Exceptionee){MessageBox.Show(ee.Message);}
}
}
privatevoidzcfm_Load(objectsender,EventArgse)
{
}
}
}
商家界面：
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclasssjfm:Form
{
publicsjfm()
{
InitializeComponent();
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
MenuShopfm=newMenuShop();
fm.Show();
}
privatevoidbutton3_Click(objectsender,EventArgse)
{
Application.Exit();
}
privatevoidbutton2_Click(objectsender,EventArgse)
{
glfmfm=newglfm();
fm.Show();
}
}
}
菜单管理
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclassMenuShop:Form
{
BaseInfobaseinfo=newBaseInfo();
BaseInfo.MenuInfostockinfo=newBaseInfo.MenuInfo();
intkj_bz=0;//控件状态标志
publicMenuShop()
{
InitializeComponent();
}
privatevoidclearText()
{
Textboxnum.Text=string.Empty;
TextboxName.Text=string.Empty;
Textboxgg.Text=string.Empty;
Textboxlx.Text=string.Empty;
Textboxdj.Text=string.Empty;
}
privatevoidcancelEnabled()
{
groupBox1.Enabled=false;
tlBtnAdd.Enabled=true;
BtnEdit.Enabled=true;
BtnDelete.Enabled=true;
BtnSave.Enabled=false;
BtnCancel.Enabled=false;
}
privatevoidLoadEnabled()
{
groupBox1.Enabled=false;
tlBtnAdd.Enabled=true;
BtnEdit.Enabled=true;
BtnDelete.Enabled=true;
BtnSave.Enabled=false;
BtnCancel.Enabled=false;
}
privatevoideditEnabled()
{
groupBox1.Enabled=true;
tlBtnAdd.Enabled=false;
BtnEdit.Enabled=false;
BtnDelete.Enabled=false;
BtnSave.Enabled=true;
BtnCancel.Enabled=true;
}
privatevoidAddEnabled()
{
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;
}
privatevoidMenuShop_Load(objectsender,EventArgse)
{
this.LoadEnabled();
dataGridView1.DataSource=baseinfo.GetAllmenu("db_menu").Tables[0].DefaultView;//展示菜品信息
this.SetdataGridView1HeadText();
}
privatevoidSetdataGridView1HeadText()
{
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";
}
privatevoiddataGridView1_CellClick(objectsender,DataGridViewCellEventArgse)
{
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
}
publicvoidlabletime()
{
labelsj.Text=System.DateTime.Now.ToString();
}
privatevoidtimer1_Tick(objectsender,EventArgse)
{
labletime();
}
privatevoidtlBtnExit_Click(objectsender,EventArgse)
{
this.Close();
//Application.Exit();
}
privatevoidBtnDelete_Click(objectsender,EventArgse)
{
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();
intid=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
}
privatevoidBtnSave_Click(objectsender,EventArgse)
{
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
intid=baseinfo.Addmenu(stockinfo);
MessageBox.Show("新增--库存商品数据--成功！","成功提示！",MessageBoxButtons.OK,MessageBoxIcon.Information);
}
catch(Exceptionex)
{
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
intid=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
}
privatevoidBtnFind_Click(objectsender,EventArgse)
{
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
{
DataSetds=null;
stockinfo.Menu_lx=tlCmbStockType.Text;
ds=baseinfo.FindmenuBylx(stockinfo,"db_menu");
dataGridView1.DataSource=ds.Tables[0].DefaultView;
this.SetdataGridView1HeadText();
}
}
privatevoidBtnCancel_Click(objectsender,EventArgse)
{
this.cancelEnabled();
}
privatevoidBtnEdit_Click(objectsender,EventArgse)
{
kj_bz=1;
this.editEnabled();
}
privatevoidtlBtnAdd_Click(objectsender,EventArgse)
{
this.AddEnabled();
kj_bz=0;
}
}
}
订单管理
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclassglfm:Form
{
BaseInfobaseinfo=newBaseInfo();
BaseInfo.Ddinfodd=newBaseInfo.Ddinfo();
publicglfm()
{
InitializeComponent();
}
privatevoidglfm_Load(objectsender,EventArgse)
{
textBoxddxq.Enabled=false;
dataGridView1.DataSource=baseinfo.GetAlldd("db_dd").Tables[0].DefaultView;//展示订单信息
this.SetdataGridView1HeadText();
}
privatevoidSetdataGridView1HeadText()
{
dataGridView1.Columns[0].HeaderText="桌号";
dataGridView1.Columns[1].HeaderText="顾客手机号";
dataGridView1.Columns[2].HeaderText="订单详情";
dataGridView1.Columns[3].HeaderText="订单总价";
dataGridView1.Columns[4].HeaderText="订单时间";
}
privatevoidtoolStripButton1_Click(objectsender,EventArgse)
{
if(ComboBoxzh.Text==string.Empty)
{
MessageBox.Show("查询类别不能为空！","错误提示！",MessageBoxButtons.OK,MessageBoxIcon.Error);
ComboBoxzh.Focus();
return;
}
else
if(ComboBoxzh.Text.Trim()=="全部")
{
dataGridView1.DataSource=baseinfo.GetAlldd("db_dd").Tables[0].DefaultView;
return;
}
if(ComboBoxzh.Text.Trim()=="已结账订单")
{
dataGridView1.DataSource=baseinfo.GetAllsydd("db_sydd").Tables[0].DefaultView;
//labelxfzj.Text=baseinfo.GetAllddsy("dd_sydd").ToString();
return;
}
else
{
DataSetds=null;
dd.Dd_num=int.Parse(ComboBoxzh.Text);
ds=baseinfo.FindddByzh(dd,"db_dd");
dataGridView1.DataSource=ds.Tables[0].DefaultView;
this.SetdataGridView1HeadText();
if(ds==null||ds.Tables.Count==0||(ds.Tables.Count==1&&ds.Tables[0].Rows.Count==0))
{
textBoxddxq.Text="";
}
else
{
textBoxddxq.Text=ds.Tables[0].Rows[0][2].ToString().Trim();
}
}
}
publicvoidyjdd()
{
dataGridView1.DataSource=baseinfo.GetAlldd("db_sydd").Tables[0].DefaultView;
SetdataGridView1HeadText();
}
privatevoiddataGridView1_CellClick(objectsender,DataGridViewCellEventArgse)
{
ComboBoxzh.Text=this.dataGridView1[0,dataGridView1.CurrentCell.RowIndex].Value.ToString();
textBoxddxq.Text=this.dataGridView1[2,dataGridView1.CurrentCell.RowIndex].Value.ToString();
labelxfzj.Text="本次消费总价为:"+this.dataGridView1[3,dataGridView1.CurrentCell.RowIndex].Value.ToString();
}
privatevoidExitBtn_Click(objectsender,EventArgse)
{
this.Close();
}
privatevoidtoolStripButton2_Click(objectsender,EventArgse)
{
if(ComboBoxzh.Text.Trim()!="")
{
dd.Dd_num=int.Parse(ComboBoxzh.Text.Trim());
dd.Zd_num=this.dataGridView1[1,dataGridView1.CurrentCell.RowIndex].Value.ToString();
dd.Dd_name=this.dataGridView1[2,dataGridView1.CurrentCell.RowIndex].Value.ToString();
dd.Dd_zj=float.Parse(this.dataGridView1[3,dataGridView1.CurrentCell.RowIndex].Value.ToString());
dd.Dd_time=this.dataGridView1[4,dataGridView1.CurrentCell.RowIndex].Value.ToString();
baseinfo.bcdd(dd);
baseinfo.Deletedd(dd);
MessageBox.Show("结账完成！");
dataGridView1.DataSource=baseinfo.GetAlldd("db_dd").Tables[0].DefaultView;
this.SetdataGridView1HeadText();
}
else
{
MessageBox.Show("请选择正确的桌号！");
return;
}
}
}
}
用户界面
usingMenuSystemWss;
usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Threading.Tasks;
usingSystem.Windows.Forms;
namespaceMenuSystemWss
{
publicpartialclassgkfm:Form
{
BaseInfobaseinfo=newBaseInfo();
BaseInfo.GkInfogkinfo=newBaseInfo.GkInfo();
BaseInfo.MenuInfomenu=newBaseInfo.MenuInfo();
BaseInfo.Ddinfoddinfo=newBaseInfo.Ddinfo();
publicdoublexfzj=0;//消费总价
publicstringyhsj="";//用户手机号
publicintqxzt=0;//点击取消时的状态
publicgkfm()
{
InitializeComponent();
}
privatevoidgkfm_Load(objectsender,EventArgse)
{
dataGridView1.DataSource=baseinfo.GetAllmenu("db_menu").Tables[0].DefaultView;//展示菜品信息
dataGridView1.ReadOnly=true;
this.SetdataGridView1HeadText();
load_Enable();
}
publicvoidload_Enable()
{
cancelAll_Enable();
DataSetds=null;
ddinfo.Zd_num=yhsj;
ds=baseinfo.FindddByzcnum(ddinfo,"db_dd");
if(ds==null||ds.Tables.Count==0||(ds.Tables.Count==1&&ds.Tables[0].Rows.Count==0))
{
comboBox1.Enabled=true;
tlBtnAdd.Enabled=true;
}
else{
jcBtn.Enabled=true;
comboBox1.Text=ds.Tables[0].Rows[0][0].ToString().Trim();
textBoxxq.Text=ds.Tables[0].Rows[0][2].ToString().Trim();
textBoxzj.Text=ds.Tables[0].Rows[0][3].ToString().Trim();
}
if(textBoxzj.Text.Trim()!="")
{
xfzj=Convert.ToDouble(textBoxzj.Text.Trim());
}
else
{
xfzj=0;
}
if(textBoxxq.Text!="")qxzt=1;
}
publicvoidcancelAll_Enable()//关闭所有的控件
{
tlBtnAdd.Enabled=false;
BtnSave.Enabled=false;
BtnCancel.Enabled=false;
jcBtn.Enabled=false;
comboBox1.Enabled=false;
textBoxlx.Enabled=false;
textBoxdj.Enabled=false;
textBoxname.Enabled=false;
button1.Enabled=false;
textBoxzj.Enabled=false;
textBoxxq.Enabled=false;
}
publicvoidjc_Enable()
{
BtnCancel.Enabled=true;
BtnSave.Enabled=true;
button1.Enabled=true;
}
publicvoidadd_Enable()
{
tlBtnAdd.Enabled=false;
BtnSave.Enabled=true;
BtnCancel.Enabled=true;
button1.Enabled=true;
}
publicvoidcancel_Enable()
{
if(qxzt==0)
{
cancelAll_Enable();
tlBtnAdd.Enabled=true;
comboBox1.Enabled=true;
xfzj=0;
textBoxxq.Text="";
}
else
{
BtnSave.Enabled=false;
BtnCancel.Enabled=false;
}
}
publicvoidlabletime()
{
labelTime.Text=System.DateTime.Now.ToString();
}
privatevoidtimer1_Tick(objectsender,EventArgse)
{
labletime();
}
privatevoidSetdataGridView1HeadText()
{
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";
}
publicvoidadd(stringstrgk)
{
DataSetds=null;
yhsj=strgk;
gkinfo.Gk_num=strgk;
ds=baseinfo.DengLu1(gkinfo,"db_menu");
label1.Text=ds.Tables[0].Rows[0][1].ToString().Trim()+"顾客您好欢迎光临小帅饭店";//**先生
}
privatevoidBtnFind_Click(objectsender,EventArgse)
{
if(toolStripComboBox1.Text==string.Empty)
{
MessageBox.Show("查询类别不能为空！","错误提示！",MessageBoxButtons.OK,MessageBoxIcon.Error);
toolStripComboBox1.Focus();
return;
}
else
if(toolStripComboBox1.Text.Trim()=="全部")
{
dataGridView1.DataSource=baseinfo.GetAllmenu("db_menu").Tables[0].DefaultView;
this.SetdataGridView1HeadText();
return;
}
else
{
DataSetds=null;
menu.Menu_lx=toolStripComboBox1.Text;
ds=baseinfo.FindmenuBylx(menu,"db_menu");
dataGridView1.DataSource=ds.Tables[0].DefaultView;
this.SetdataGridView1HeadText();
}
}
privatevoidtoolStrip1_ItemClicked(objectsender,ToolStripItemClickedEventArgse)
{
}
privatevoidtlBtnAdd_Click(objectsender,EventArgse)
{
MessageBox.Show("请选择桌号！");
add_Enable();
}
privatevoidBtnCancel_Click(objectsender,EventArgse)
{
cancel_Enable();
}
privatevoiddataGridView1_CellClick(objectsender,DataGridViewCellEventArgse)
{
textBoxname.Text=this.dataGridView1[1,dataGridView1.CurrentCell.RowIndex].Value.ToString();//显示菜品全称
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();//显示菜品价格
}
privatevoidtlBtnExit_Click(objectsender,EventArgse)
{
Application.Exit();
}
privatevoidbutton1_Click(objectsender,EventArgse)
{
textBoxxq.Text+=textBoxname.Text.Trim()+"*1;";
//listView1.Items.Add(textBoxname.Text.Trim()+"*1;");
xfzj+=Convert.ToDouble(textBoxdj.Text.Trim());
textBoxzj.Text=xfzj.ToString();
}
privatevoidBtnSave_Click(objectsender,EventArgse)
{
if(comboBox1.Text==""){MessageBox.Show("桌号不能为空！请选择桌号！");return;}
stringstrlist=textBoxxq.Text.Trim();
/*for(inti=0;i
还有两个类文件，可在项目中查看。
部分代码参考我们学的课本上的源代码，代码只是大作水平，仅供参考学习。
更多学习资料请关注专题《管理系统开发》。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持毛票票。
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