本篇内容介绍了“C#如何实现航班预订系统”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
连接数据库
using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Data;using System.Data.SqlClient;namespace MyTickets{ public class DBHelper { //数据库连接字符串 public string connString = @"Data Source=.;Initial Catalog=MyTicket;Trusted_Connection=Yes;Connect Timeout=90"; /// <summary> /// 数据库连接对象 /// </summary> private SqlConnection connction; public SqlConnection Connction { get { if (connction == null) { connction = new SqlConnection(connString); } return connction; } } /// <summary> /// 打开数据库连接 /// </summary> public void OpenConnection() { if (connction.State == ConnectionState.Closed) { Connction.Open(); } else if (connction.State == ConnectionState.Broken) { Connction.Close(); Connction.Open(); } } /// <summary> /// 关闭数据库连接 /// </summary> public void CloseConnection() { if(connction.State==ConnectionState.Open|| connction.State == ConnectionState.Broken) { Connction.Close(); } } }}开头动画代码
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;using System.Threading;namespace MyTickets{ public partial class 开头 : Form { public 开头() { InitializeComponent(); timer1.Interval = 1000; timer1.Start(); timer1.Tick += new EventHandler(timer1_Tick); } private void 开头_Load(object sender, EventArgs e) { TransparencyKey = BackColor; } private void timer1_Tick(object sender, EventArgs e) { timer1.Stop(); 初始界面 f0 = new 初始界面(); this.Hide(); f0.ShowDialog(); } }}机票预订界面
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;using System.Data.SqlClient;namespace MyTickets{ public partial class 机票预订 : Form { #region 构造函数 public 机票预订() { InitializeComponent(); } public 机票预订(string text) { InitializeComponent(); usename.Text = text; } #endregion #region 方法 #region 绑定cbo /// <summary> /// 绑定cbo /// </summary> private void BindCbo() { DBHelper dbHelper = new DBHelper(); //sql语句 string sql = "select * from cityInfo"; //适配器adapter SqlDataAdapter adapter = new SqlDataAdapter(sql, dbHelper.Connction); //数据集 DataSet ds = new DataSet(); //填充数据集 adapter.FillSchema(ds, SchemaType.Source, "cityInfo"); adapter.Fill(ds, "cityInfo"); //新的一行 DataRow row = ds.Tables["cityInfo"].NewRow(); row[0] = -1; row[1] = "请选择"; //插入 ds.Tables["cityInfo"].Rows.InsertAt(row, 0); //获取视图 DataView dv1 = new DataView(ds.Tables["cityInfo"]); DataView dv2 = new DataView(ds.Tables["cityInfo"]); //绑定 this.cboDestinationCity.DataSource = dv1; this.cboDestinationCity.DisplayMember = "cityName"; this.cboDestinationCity.ValueMember = "id"; this.cboLeaveCity.DataSource = dv2; this.cboLeaveCity.DisplayMember = "cityName"; this.cboLeaveCity.ValueMember = "id"; } #endregion #region 绑定dgv /// <summary> /// 绑定dgv /// </summary> private void BindDgv() { DBHelper dbHelper = new DBHelper(); string sql = string.Format(@"select flightNo,airways,leaveTime,landTime,price from flightInfo,airwaysInfo where flightInfo.airwaysId=airwaysInfo.id and leaveCity={0} and destinationCity={1}", cboLeaveCity.SelectedValue, cboDestinationCity.SelectedValue); SqlDataAdapter adapter = new SqlDataAdapter(sql, dbHelper.Connction); DataSet ds = new DataSet(); adapter.Fill(ds, "flightInfo"); this.dataGridView1.DataSource = ds.Tables["flightInfo"]; } #endregion #region 验证预订部分的用户输入 /// <summary> /// 验证预订部分的用户输入 /// </summary> /// <returns></returns> private bool ValidateInput() { if (txtFlightNo.Text == string.Empty) { MessageBox.Show("请选择一个航班！"); return false; } if (dateTimePicker1.Value < DateTime.Now) { MessageBox.Show("请选择正确的出发日期！"); dateTimePicker1.Focus(); return false; } return true; } #endregion #endregion #region 事件 //加载事件 private void Form1_Load(object sender, EventArgs e) { BindCbo(); TransparencyKey = BackColor; } //查询事件 private void tbnQuery_Click(object sender, EventArgs e) { if(cboLeaveCity.Text=="请选择"||cboDestinationCity.Text=="请选择") { MessageBox.Show("请选择出发地与目的地！"); this.dataGridView1.DataSource = null; return; } BindDgv(); //清空txt foreach (Control c in groupBox2.Controls) { if(c is TextBox) { c.Text = string.Empty; } } } //单击dgv private void dataGridView1_Click(object sender, EventArgs e) { if(dataGridView1.Rows.Count>0) { this.txtFlightNo.Text = dataGridView1.CurrentRow.Cells["flightNo"].Value.ToString(); this.txtAirways.Text = dataGridView1.CurrentRow.Cells["airways"].Value.ToString(); this.txtFrom.Text = cboLeaveCity.Text; this.txtTo.Text = cboDestinationCity.Text; this.txtLeaveTime.Text = dataGridView1.CurrentRow.Cells["leaveTime"].Value.ToString(); this.txtLandTime.Text = dataGridView1.CurrentRow.Cells["landTime"].Value.ToString(); this.txtPrice.Text = dataGridView1.CurrentRow.Cells["price"].Value.ToString(); } } //点击关闭 private void button2_Click(object sender, EventArgs e) { Application.Exit(); } //点击预定 private void button1_Click(object sender, EventArgs e) { if(ValidateInput()) { Random random = new Random(); int orderId= random.Next(100000, 9999999); string flightNo = this.txtFlightNo.Text; string leaveDate = this.dateTimePicker1.Value.ToShortDateString(); string landTime = this.txtLandTime.Text; string price = this.txtPrice.Text; int num = (int)this.numNunber.Value; string leavePlace = this.txtFrom.Text; string landPlace = this.txtTo.Text; string usename = this.usename.Text; string sql = string.Format(@"insert into orderInfo(orderId,flightNo,leaveDate,landTime,price,Number,leavePlace,landPlace,useId) values({0},'{1}','{2}','{3}','{4}',{5},'{6}','{7}','{8}')", orderId, flightNo, leaveDate,landTime,price,num, leavePlace, landPlace,usename); DBHelper dbHelper = new DBHelper(); try { //执行工具 SqlCommand cmd = new SqlCommand(sql, dbHelper.Connction); //打开数据库 dbHelper.OpenConnection(); //执行 int result =cmd.ExecuteNonQuery(); //判断 if(result>0) { MessageBox.Show("预订成功！订单编号是：" + orderId); } else { MessageBox.Show("预定失败，请重试！"); } } catch(Exception ex) { MessageBox.Show("发生错误，请联系管理员,错误原因是："+ex.Message); } finally { dbHelper.CloseConnection(); } } } #endregion #region 鼠标移动 Point mouseOff;//鼠标移动位置变量 bool leftFlag;//标签是否为左键 private void 机票预订_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { mouseOff = new Point(-e.X, -e.Y); //得到变量的值 leftFlag = true; //点击左键按下时标注为true; } } private void 机票预订_MouseMove(object sender, MouseEventArgs e) { if (leftFlag) { Point mouseSet = Control.MousePosition; mouseSet.Offset(mouseOff.X, mouseOff.Y); //设置移动后的位置 Location = mouseSet; } } private void 机票预订_MouseUp(object sender, MouseEventArgs e) { if (leftFlag) { leftFlag = false;//释放鼠标后标注为false; } } #endregion }}订单查询界面
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;using System.Data.SqlClient;namespace MyTickets{ public partial class 订单查询 : Form { public 订单查询(string text) { InitializeComponent(); usename.Text = text.ToString(); } #region 鼠标移动 Point mouseOff;//鼠标移动位置变量 bool leftFlag;//标签是否为左键 private void 订单查询_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { mouseOff = new Point(-e.X, -e.Y); //得到变量的值 leftFlag = true; //点击左键按下时标注为true; } } private void 订单查询_MouseMove(object sender, MouseEventArgs e) { if (leftFlag) { Point mouseSet = Control.MousePosition; mouseSet.Offset(mouseOff.X, mouseOff.Y); //设置移动后的位置 Location = mouseSet; } } private void 订单查询_MouseUp(object sender, MouseEventArgs e) { if (leftFlag) { leftFlag = false;//释放鼠标后标注为false; } } #endregion private void 订单查询_Load(object sender, EventArgs e) { DBHelper dbHelper = new DBHelper(); string sql = string.Format(@"select orderId,flightNo,leaveDate,landTime,leavePlace,landPlace from orderInfo where useId ='{0}'",usename); SqlDataAdapter adapter = new SqlDataAdapter(sql, dbHelper.Connction); DataSet ds = new DataSet(); adapter.Fill(ds, "orderInfo"); this.dataGridView1.DataSource = ds.Tables["orderInfo"]; } private void button1_Click(object sender, EventArgs e) { Application.Exit(); } }}登录界面
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;using System.Threading;using System.Data.SqlClient;namespace MyTickets{ public partial class 初始界面 : Form { public 初始界面() { InitializeComponent(); } int count = 0; #region 鼠标移动 Point mouseOff;//鼠标移动位置变量 bool leftFlag;//标签是否为左键 private void 初始界面_MouseDown(object sender, MouseEventArgs e) { if (e.Button == MouseButtons.Left) { mouseOff = new Point(-e.X, -e.Y); //得到变量的值 leftFlag = true; //点击左键按下时标注为true; } } private void 初始界面_MouseMove(object sender, MouseEventArgs e) { if (leftFlag) { Point mouseSet = Control.MousePosition; mouseSet.Offset(mouseOff.X, mouseOff.Y); //设置移动后的位置 Location = mouseSet; } } private void 初始界面_MouseUp(object sender, MouseEventArgs e) { if (leftFlag) { leftFlag = false;//释放鼠标后标注为false; } } #endregion #region 打开其他窗口 private void 查询订单btn_Click(object sender, EventArgs e) { string userid = this.用户名TEXT.Text; string psword = this.passwordtxt.Text; if (userid.Equals("") || psword.Equals(""))//用户名或密码为空 { MessageBox.Show("用户名或密码不能为空"); } else { string sql = string.Format(@"select useId,psword from LoginIn where useId = '{0}' and psWord = '{1}'", userid, psword); DBHelper dbHelper = new DBHelper(); SqlCommand cmd = new SqlCommand(sql, dbHelper.Connction); dbHelper.OpenConnection(); SqlDataReader sdr = cmd.ExecuteReader(); if (sdr.Read()) { MessageBox.Show("信息验证成功"); //跳转到主页面 订单查询 fd = new 订单查询(用户名TEXT.Text); fd.ShowDialog(); this.Hide(); } else { MessageBox.Show("用户名或密码错误"); } } } #endregion #region 轮播 private void ChangeImage(Image img, int millisecondsTimeOut) { if (this.IsHandleCreated) { this.Invoke(new Action(() => { 轮播1.Image = img; }) ); } Thread.Sleep(millisecondsTimeOut); } private void 初始界面_Load(object sender, EventArgs e) { Thread th; th = new Thread ( delegate () { // 3就是要循环轮数了 for (int i = 0; i < 100; i++) { //调用方法 ChangeImage(Properties.Resources.东方航空, 2000); count++; ChangeImage(Properties.Resources.南方航空, 2000); count++; ChangeImage(Properties.Resources.四川航空, 2000); count++; ChangeImage(Properties.Resources.海南航空, 2000); count++; } } ); th.IsBackground = true; th.Start(); } //关闭 private void label1_Click(object sender, EventArgs e) { Application.Exit(); } //轮播 private void pictureBox1_Click(object sender, EventArgs e) { if (count % 4 == 0) { System.Diagnostics.Process.Start("http://www.ceair.com/"); } if (count % 4 == 3) { System.Diagnostics.Process.Start("https://www.hnair.com/"); } if (count % 4 == 1) { System.Diagnostics.Process.Start("https://www.csair.com/"); } if (count % 4 == 2) { System.Diagnostics.Process.Start("http://www.sichuanair.com/"); } } #endregion #region 绑定登录 private void 登录btn_Click(object sender, EventArgs e) { string userid = this.用户名TEXT.Text; string psword = this.passwordtxt.Text; if (userid.Equals("") || psword.Equals(""))//用户名或密码为空 { MessageBox.Show("用户名或密码不能为空"); } else { string sql = string.Format(@"select useId,psword from LoginIn where useId = '{0}' and psWord = '{1}'",userid, psword); DBHelper dbHelper = new DBHelper(); SqlCommand cmd = new SqlCommand(sql, dbHelper.Connction); dbHelper.OpenConnection(); SqlDataReader sdr = cmd.ExecuteReader(); if (sdr.Read()) { MessageBox.Show("信息验证成功"); //跳转到主页面 机票预订 f2 = new 机票预订(用户名TEXT.Text); this.Hide(); f2.ShowDialog(); } else { MessageBox.Show("用户名或密码错误"); } } } #endregion #region 绑定注册 private void 注册btn_Click(object sender, EventArgs e) { string userid = this.用户名TEXT.Text; string psword = this.passwordtxt.Text; string sql = string.Format(@"insert into LoginIn(useId,psWord) values('{0}','{1}')", userid, psword); DBHelper dbHelper = new DBHelper(); try { //执行工具 SqlCommand cmd = new SqlCommand(sql, dbHelper.Connction); //打开数据库 dbHelper.OpenConnection(); //执行 int result = cmd.ExecuteNonQuery(); //判断 if (result > 0) { MessageBox.Show("注册成功，请登录！"); } else { MessageBox.Show("注册失败，请重试！"); } } catch (Exception ex) { MessageBox.Show("发生错误，请联系管理员,错误原因是：" + ex.Message); } } #endregion }}下面是一些效果图
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