UML 飞机订票系统课设要点 - 图文 (4)

Return : users1: 订单查询TicketInfoCtrlTicketControlTicketTicketInfo2: 查询订单3: 订单查询4: 订单信息5: 订单信息6: 退订机票7: 更新机票信息8: 更新机票信息9: 删除订单10: 退订成功提醒

2.3详细设计部分

2.3.1本系统用用户类，售票员类，系统管理员类，以及银行类组成

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2.3.2 登录状态图

login promptentry/ ShowLoginScreenexit/ hideLoginScreenevent Undefined/ ClearData...logincheck out usercheck outtry againcheck outSuccessed loginLogin failed

2.3.3 整个系统状态图

waitingloginsuccessed loginsearchdisplay informationchoosedisplay part of ordercloseclosesuccessed return ticketorderorderreturnhad evalutionreturn ticketTo be paidSold outto be Approvalevalutionapply for return ticketpay offto be Evalu...confirmto be confirm

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2.4实现说明 2.4.1登录界面

2.4.2 主窗口

主要实现代码：

public static String strnum;

public static String airTime;

private void timer1_Tick(object sender, EventArgs e) {

toolStripStatusLabel4.Text = \ 当ì?à前??时o?à间?：êo\

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DateTime.Now.ToLongDateString() + DateTime.Now.ToLongTimeString(); }

private void Form2_Load(object sender, EventArgs e) {

timer1.Start();

timer1.Interval = 1000;

comboBox1.SelectedIndex = 0;

String str = \ SqlConnection conn = new SqlConnection(str); conn.Open();

String sql = \始o?发¤?é地ì? from PlaneInfo\ SqlDataAdapter da = new SqlDataAdapter(sql,conn); DataSet ds = new DataSet(); da.Fill(ds, \

comboBox2.DataSource = ds.Tables[\ comboBox2.DisplayMember = \始o?发¤?é地ì?\ String sqll = \目?的ì?地ì? from PlaneInfo\ da = new SqlDataAdapter(sqll, conn); ds = new DataSet(); da.Fill(ds, \

comboBox3.DataSource = ds.Tables[\ comboBox3.DisplayMember = \目?的ì?地ì?\ conn.Close();

}

private void button1_Click(object sender, EventArgs e) {

String str = \ SqlConnection conn = new SqlConnection(str); conn.Open();

String selectCo = \* from PlaneInfo where 始o?发¤?é地ì?='\+ comboBox2.Text.Trim() + \目?的ì?地ì?='\ //String selectCo = \

SqlCommand comm = new SqlCommand(selectCo,conn); SqlDataReader dr = comm.ExecuteReader(); if (dr.Read()) {

conn.Close(); conn.Open();

SqlDataAdapter da = new SqlDataAdapter(selectCo, conn); DataTable ds = new DataTable(); da.Fill(ds);

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dataGridView1.DataSource = ds; } else

{ MessageBox.Show(\无T此??航?班?¨¤\ conn.Close(); }

private void label2_Click(object sender, EventArgs e) {

String str = \ SqlConnection conn = new SqlConnection(str); conn.Open();

String selectCo = \目?的ì?地ì?='海?ê南?'\ SqlDataAdapter da = new SqlDataAdapter(selectCo, conn); DataTable ds = new DataTable(); da.Fill(ds);

dataGridView1.DataSource = ds; conn.Close(); }

private void label3_Click(object sender, EventArgs e) {

String str = \ SqlConnection conn = new SqlConnection(str); conn.Open();

String selectCo = \目?的ì?地ì?='巴?¨a黎¤¨¨'\ SqlDataAdapter da = new SqlDataAdapter(selectCo, conn); DataTable ds = new DataTable(); da.Fill(ds);

dataGridView1.DataSource = ds; conn.Close(); }

private void label4_Click(object sender, EventArgs e) {

String str = \ SqlConnection conn = new SqlConnection(str); conn.Open();

String selectCo = \折?扣?<6.0\ SqlDataAdapter da = new SqlDataAdapter(selectCo, conn); DataTable ds = new DataTable(); da.Fill(ds);

dataGridView1.DataSource = ds; conn.Close();

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