C#超市收银系统设计
本文实例为大家分享了C#超市收银系统设计的具体代码,供大家参考,具体内容如下
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1.登录界面
代码如下:
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 梦之翼小组项目 { public partial class denglu : Form { public denglu() { InitializeComponent(); } model db = new model(); //实例化数据库对象 private void button1_Click(object sender, EventArgs e) { string strConn = "Data Source=.;Initial Catalog=shopInfo;Integrated Security=True"; //连接数据库 SqlConnection Connection = new SqlConnection(strConn); try { string sqlStr = "select userName,userPassword from register where userName=@userName"; //查询 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)); //传参 cmd.Parameters["@userName"].Value = userName.Text; //给user文本框赋值 SqlDataReader dater = cmd.ExecuteReader(); if (userName.Text.Trim() == "") //如果user的值等于空 { MessageBox.Show( "用户名不允许为空!"); } else if (passWord.Text.Trim() == "") //同上 { MessageBox.Show( "密码不能为空!"); } else if (!dater.Read()) //如果输入的用户名没有被dater读到,则用户名不存在 { MessageBox.Show( "用户名不存在!"); userName.Text = ""; passWord.Text = ""; } else if (dater["userPassWord"].ToString().Trim() == passWord.Text.Trim()) //输入密码等于数据库密码登录成功且弹出音乐框 { MessageBox.Show( "登录成功!"); userName.Text = ""; passWord.Text = ""; caozuoyemain frm = new caozuoyemain(); frm.ShowDialog(); } else { MessageBox.Show("密码错误!"); //否则密码错误 userName.Text = ""; passWord.Text = ""; } } catch (Exception) { throw; //抛出异常 } finally { Connection.Close(); //关闭数据库 } } 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:
代码如下:
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 梦之翼小组项目 { public partial class caozuoyemain : Form { public caozuoyemain() { InitializeComponent(); } public double totalPrice;//每种商品的总价 public double total; //所有商品的总价 public double shijijin;//顾客给的钱数 public double yingzhao;// 找给顾客的钱数 public string mingcheng;//每件商品的名称 public double shuliang;//每件商品的数量 public double jiage;//每件商品的价格 public int i = 0; //商品收费的id model db = new model(); //实例化数据库对象 public void fanli() //单件物品的返利方法 { if (jiage * shuliang < 600 && jiage * shuliang > 300) { totalPrice = jiage * shuliang - 100; } else { totalPrice = jiage * shuliang; } } private void confirm_Click(object sender, EventArgs e) //单击确定按钮的事件 { totalPrice = 0; //每一次商品的单个金额 jiage = Convert.ToDouble(price.Text); shuliang = Convert.ToDouble(number.Text); //数据类型的转换 switch (jisuanfangshi.SelectedIndex) { case 0: totalPrice = jiage * shuliang; break; case 1: totalPrice = jiage * shuliang*0.8; break; case 2: fanli(); //调用单个物品的返利方法 break; } total = totalPrice + total; //所有商品的总金额 zongjine.Text = total.ToString();//总金额转换数据类型,显示到文本框里面 i++; //每一次的商品id加1,为了调出所有商品的最后一个数据 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,信息有误,注册失败"); } } 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.收银员注册界面:
代码如下:
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 梦之翼小组项目 { public partial class zhuce : Form { public zhuce() { InitializeComponent(); } public string sexValue; //接收性别的字段 model db = new model(); //实例化数据库对象 private bool testuserName(string strUsername) //检测用户名的方法 { bool strResult;// 判断结果的接收 Regex exStrUserName = new Regex(@"^[a-zA-Z][a-zA-Z0-9]{3,8}$"); //正则表达式的书写 if (strResult = exStrUserName.Match(strUsername).Success) { yonghuming_test.Text = "✔"; } else { MessageBox.Show("用户名由3—6位的字母和数字组成,必须以字母开头"); } return strResult; } private bool testPassWord(string strUsername) //检测密码的方法 { bool strResult;// 判断结果的接收 Regex exStrUserName = new Regex(@"^[\w\-~!@#$%^&*()+{}[ \]:]{6,16}"); //正则表达式的书写 if (strResult = exStrUserName.Match(strUsername).Success) { mima_test.Text = "✔"; } else { mima_test.Text = "✘"; MessageBox.Show("密码由6—16位的字母和数字或符号组成"); } return strResult; } private bool testName(string strUsername) //检测姓名的方法 { bool strResult;// 判断结果的接收 Regex exStrUserName = new Regex(@"^([a-zA-Z0-9\u4e00-\u9fa5\·]{2,3})$"); //正则表达式的书写 if (strResult = exStrUserName.Match(strUsername).Success) { name_test.Text = "✔"; } else { name_test.Text = "✘"; MessageBox.Show("请文明用语,输入合法的中文姓名哦"); } if (name_text.Text == "小猫" || name_text.Text == "小狗" || name_text.Text == "傻逼") { name_test.Text = "✘"; MessageBox.Show("请文明用语,输入合法的中文姓名哦"); } return strResult; } private bool testPhonnumber(string strUsername) //检测手机号的方法 { bool strResult;// 判断结果的接收 Regex exStrUserName = new Regex(@"^(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$"); //正则表达式的书写 if (strResult = exStrUserName.Match(strUsername).Success) { phonnumber_test.Text = "✔"; } else { phonnumber_test.Text = "✘"; MessageBox.Show("请输入正确的手机号码"); } return strResult; } private void nan_rb_CheckedChanged(object sender, EventArgs e) //选择性别的事件 { 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) //注册的点击事件 { 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("恭喜你注册成功,是否转到登录界面","注册成功对话框",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,信息有误,注册失败"); } } private void username_text_Leave(object sender, EventArgs e) //用户名文本框的光标事件 { if (username_text.Text == "") { MessageBox.Show("用户名不能为空"); } else { testuserName(username_text.Text); } } private void password_text_Leave(object sender, EventArgs e)//密码文本框的光标事件 { if (password_text.Text == "") { MessageBox.Show("密码不能为空"); } else { testPassWord(password_text.Text); } } private void name_text_Leave(object sender, EventArgs e)//姓名文本框的光标事件 { if (name_text.Text == "") { MessageBox.Show("姓名不能为空"); } else { testName(name_text.Text); } } private void phonnumber_text_Leave(object sender, EventArgs e)//手机号文本框的光标事件 { if (phonnumber_text.Text == "") { MessageBox.Show("手机号不能为空"); } else { testPhonnumber(phonnumber_text.Text); } } private void chongzhi_bt_Click(object sender, EventArgs e) //重置按钮 { 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内容,希望对大家的学习有所帮助,也希望大家多多支持创新互联。
本文名称:C#超市收银系统设计
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