goupiao.cs

火车票的销售系统

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace pwxt
{
    public partial class goupiao : Form
    {
        public goupiao()
        {
            InitializeComponent();
        }
        public int price;
        public int number;
        public int sum;
        private void button1_Click(object sender, EventArgs e)
        {

            string arrivel = textBox1.Text;
            SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["connectionstring"]);
            SqlCommand cmd = new SqlCommand("Select * From LCtable Where 站名='" + arrivel + "'", conn);
            SqlDataReader odr = null;
            conn.Open();
            odr = cmd.ExecuteReader();
            while (odr.Read())
            {
                    textBox4.Text = odr["价格"].ToString();
                   
            }
            odr.Close();
            conn.Close();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            number = int.Parse(textBox2.Text);
            price = int.Parse(textBox4.Text);
            sum = number * price;
            textBox3.Text = sum.ToString();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }
        static int i=0;
        static int j=0;
        static int k=1;
        static int r=0;
        private void button4_Click(object sender, EventArgs e)
        {
            string arrivel = textBox1.Text;
            string lieci = null;
            SqlConnection conn = new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["connectionstring"]);
            SqlCommand cmd = new SqlCommand("Select * From LCtable Where 站名='" + arrivel + "'", conn);
            SqlDataReader odr = null;
            conn.Open();
            odr = cmd.ExecuteReader();
            while (odr.Read())
            {
                lieci = odr["车次"].ToString();
            }
            label6.Text ="泉州-" + textBox1.Text +"  车次是： " +lieci+"车票日期是： "+textBox5.Text;
            if (i < 30)
            {
                k = j;
                j=j+int.Parse(textBox2.Text);
                
                r = i;
                if (j > 8)
                {
                    i++;
                    j = j - 8;
                    
                }
            }
            else
                MessageBox.Show("该车已经满座了");
            if (int.Parse(textBox2.Text) == 1)
            {
                label8.Text = "您的座位是： " + (i+1).ToString() + "排 " + j.ToString() + "座";
                if (r != i)
                {
                    label8.Text = "您的座位是： " + (r+1).ToString() + "排" + (k+1).ToString() + " ~ " + "8座" + (i+1).ToString() + "排" +" 1 ~ "+ j.ToString() + "座";
                }
                
            }
            else
            {
                label8.Text = "您的座位是： " + (i+1).ToString() + "排 " + (k+1).ToString() + " ~ " + j.ToString() + "座";
                if (r != i)
                {
                    label8.Text = "您的座位是： " + (r + 1).ToString() + "排" + (k+1).ToString() + " ~ " + "8座" + (i + 1).ToString() + "排" + " 1 ~ " + j.ToString() + "座";
                }
               
            }
                odr.Close();
            conn.Close();
        }

       

        

    }
}