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本文實例為大家分享了C#超市收銀系統設計的具體代碼，供大家參考，具體內容如下
1.登錄界面
代碼如下：
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 夢之翼小組項目
{
public partial class denglu : Form
{
public denglu()
{
InitializeComponent();
}
model db = new model(); //實例化數據庫對象
private void button1_Click(object sender, EventArgs e)
{
string strConn = "Data Source=.;Initial Catalog=shopInfo;Integrated Security=True"; //連接數據庫
SqlConnection Connection = new SqlConnection(strConn);
try
{
string sqlStr = "select userName,userPassword from register where userName=@userName"; //查詢
DataSet ds = new DataSet();
Connection.ConnectionString = Connection.ConnectionString;
Connection.Open();
SqlCommand cmd = new SqlCommand(sqlStr, Connection);
cmd.Parameters.Add(new SqlParameter("@userName", SqlDbType.VarChar, 30)); //傳參
cmd.Parameters["@userName"].Value = userName.Text; //給user文本框賦值
SqlDataReader dater = cmd.ExecuteReader();
if (userName.Text.Trim() == "") //如果user的值等于空
{
MessageBox.Show( "用戶名不允許為空!");
}
else if (passWord.Text.Trim() == "") //同上
{
MessageBox.Show( "密碼不能為空!");
}
else if (!dater.Read()) //如果輸入的用戶名沒有被dater讀到，則用戶名不存在
{
MessageBox.Show( "用戶名不存在！");
userName.Text = "";
passWord.Text = "";
}
else if (dater["userPassWord"].ToString().Trim() == passWord.Text.Trim()) //輸入密碼等于數據庫密碼登錄成功且彈出音樂框
{
MessageBox.Show( "登錄成功！");
userName.Text = "";
passWord.Text = "";
caozuoyemain frm = new caozuoyemain();
frm.ShowDialog();
}
else
{
MessageBox.Show("密碼錯誤！"); //否則密碼錯誤
userName.Text = "";
passWord.Text = "";
}
}
catch (Exception)
{
throw; //拋出異常
}
finally
{
Connection.Close(); //關閉數據庫
}
}
private void label4_Click(object sender, EventArgs e)
{
zhuce fra = new zhuce();
fra.ShowDialog();
}
private void label6_Click(object sender, EventArgs e)
{
zhaohuimima fra = new zhaohuimima();
fra.ShowDialog();
}
private void denglu_Load(object sender, EventArgs e)
{
}
}
}
2.操作界面:
代碼如下：
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 夢之翼小組項目
{
public partial class caozuoyemain : Form
{
public caozuoyemain()
{
InitializeComponent();
}
public double totalPrice;//每種商品的總價
public double total; //所有商品的總價
public double shijijin;//顧客給的錢數
public double yingzhao;// 找給顧客的錢數
public string mingcheng;//每件商品的名稱
public double shuliang;//每件商品的數量
public double jiage;//每件商品的價格
public int i = 0; //商品收費的id
model db = new model(); //實例化數據庫對象
public void fanli() //單件物品的返利方法
{
if (jiage * shuliang < 600 && jiage * shuliang > 300)
{
totalPrice = jiage * shuliang - 100;
}
else
{
totalPrice = jiage * shuliang;
}
}
private void confirm_Click(object sender, EventArgs e) //單擊確定按鈕的事件
{
totalPrice = 0; //每一次商品的單個金額
jiage = Convert.ToDouble(price.Text);
shuliang = Convert.ToDouble(number.Text); //數據類型的轉換
switch (jisuanfangshi.SelectedIndex)
{
case 0:
totalPrice = jiage * shuliang;
break;
case 1:
totalPrice = jiage * shuliang*0.8;
break;
case 2:
fanli(); //調用單個物品的返利方法
break;
}
total = totalPrice + total; //所有商品的總金額
zongjine.Text = total.ToString();//總金額轉換數據類型，顯示到文本框里面
i++; //每一次的商品id加1，為了調出所有商品的最后一個數據
db.dbcon();
try
{
string insertInfo = "insert wupin values('" + i.ToString() + "','" + tradeName.Text + "','" + price.Text + "','" +
number.Text + "','" + jisuanfangshi.Text + "','" + totalPrice.ToString() + "')";
db.dbInsert(insertInfo);
string selstr = "select top "+i+" * from wupin order by 物品ID desc";
db.dbFill(selstr);
dataGridView1.DataSource = db.dt;
}
catch (Exception)
{
MessageBox.Show("不好意思，信息有誤，注冊失敗");
}
}
private void caozuoyemain_Load(object sender, EventArgs e)
{
db.dbcon();
string qingkong = "TRUNCATE TABLE wupin";
db.dbInsert(qingkong);
jisuanfangshi.SelectedIndex = 0;
}
private void jiesuan_Click(object sender, EventArgs e)
{
shijijin = Convert.ToDouble(shishoujine.Text);
yingzhao=Convert.ToDouble(zongjine.Text) ;
yingzhao = shijijin - total;
zhaojine.Text = yingzhao.ToString()+"元";
}
private void resetting_Click(object sender, EventArgs e)
{
tradeName.Text = "";
price.Text = "";
number.Text = "";
}
}
}
3.收銀員注冊界面：
代碼如下：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace 夢之翼小組項目
{
public partial class zhuce : Form
{
public zhuce()
{
InitializeComponent();
}
public string sexValue; //接收性別的字段
model db = new model(); //實例化數據庫對象
private bool testuserName(string strUsername) //檢測用戶名的方法
{
bool strResult;// 判斷結果的接收
Regex exStrUserName = new Regex(@"^[a-zA-Z][a-zA-Z0-9]{3,8}$");
//正則表達式的書寫
if (strResult = exStrUserName.Match(strUsername).Success)
{
yonghuming_test.Text = "✔";
}
else
{
MessageBox.Show("用戶名由3—6位的字母和數字組成，必須以字母開頭");
}
return strResult;
}
private bool testPassWord(string strUsername) //檢測密碼的方法
{
bool strResult;// 判斷結果的接收
Regex exStrUserName = new Regex(@"^[\w\-~!@#$%^&*()+{}[ \]:]{6,16}");
//正則表達式的書寫
if (strResult = exStrUserName.Match(strUsername).Success)
{
mima_test.Text = "✔";
}
else
{
mima_test.Text = "✘";
MessageBox.Show("密碼由6—16位的字母和數字或符號組成");
}
return strResult;
}
private bool testName(string strUsername) //檢測姓名的方法
{
bool strResult;// 判斷結果的接收
Regex exStrUserName = new Regex(@"^([a-zA-Z0-9\u4e00-\u9fa5\·]{2,3})$");
//正則表達式的書寫
if (strResult = exStrUserName.Match(strUsername).Success)
{
name_test.Text = "✔";
}
else
{
name_test.Text = "✘";
MessageBox.Show("請文明用語，輸入合法的中文姓名哦");
}
if (name_text.Text == "小貓" || name_text.Text == "小狗" || name_text.Text == "傻逼")
{
name_test.Text = "✘";
MessageBox.Show("請文明用語，輸入合法的中文姓名哦");
}
return strResult;
}
private bool testPhonnumber(string strUsername) //檢測手機號的方法
{
bool strResult;// 判斷結果的接收
Regex exStrUserName = new Regex(@"^(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$");
//正則表達式的書寫
if (strResult = exStrUserName.Match(strUsername).Success)
{
phonnumber_test.Text = "✔";
}
else
{
phonnumber_test.Text = "✘";
MessageBox.Show("請輸入正確的手機號碼");
}
return strResult;
}
private void nan_rb_CheckedChanged(object sender, EventArgs e) //選擇性別的事件
{
sexValue = nan_rb.Text;
}
private void nv_rb_CheckedChanged(object sender, EventArgs e)
{
sexValue = nv_rb.Text;
}
private void zhuce_bt_Click(object sender, EventArgs e) //注冊的點擊事件
{
db.dbcon();
try
{
string insertInfo = "insert register values('" + username_text.Text + "','" + password_text.Text+ "','" + name_text.Text+
"','" + sexValue + "','" + phonnumber_text.Text + "')";
db.dbInsert(insertInfo);
DialogResult dr=MessageBox.Show("恭喜你注冊成功,是否轉到登錄界面","注冊成功對話框",MessageBoxButtons.OKCancel,MessageBoxIcon.Information);
if (dr == DialogResult.OK)
{
this.Close();
denglu fra = new denglu();
fra.ShowDialog();
}
else if (dr == DialogResult.Cancel)
{
this.Close();
}
}
catch (Exception)
{
MessageBox.Show("不好意思，信息有誤，注冊失敗");
}
}
private void username_text_Leave(object sender, EventArgs e) //用戶名文本框的光標事件
{
if (username_text.Text == "")
{
MessageBox.Show("用戶名不能為空");
}
else
{
testuserName(username_text.Text);
}
}
private void password_text_Leave(object sender, EventArgs e)//密碼文本框的光標事件
{
if (password_text.Text == "")
{
MessageBox.Show("密碼不能為空");
}
else
{
testPassWord(password_text.Text);
}
}
private void name_text_Leave(object sender, EventArgs e)//姓名文本框的光標事件
{
if (name_text.Text == "")
{
MessageBox.Show("姓名不能為空");
}
else
{
testName(name_text.Text);
}
}
private void phonnumber_text_Leave(object sender, EventArgs e)//手機號文本框的光標事件
{
if (phonnumber_text.Text == "")
{
MessageBox.Show("手機號不能為空");
}
else
{
testPhonnumber(phonnumber_text.Text);
}
}
private void chongzhi_bt_Click(object sender, EventArgs e) //重置按鈕
{
username_text.Text = "";
phonnumber_text.Text = "";
name_text.Text = "";
phonnumber_text.Text = "";
}
private void quxiao_bt_Click(object sender, EventArgs e)// 取消事件
{
this.Close();
}
private void zhuce_Load(object sender, EventArgs e)
{
}
}
}
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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