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VB航空公司管理信息系统 第13页

更新时间:2010-3-7:  来源:毕业论文
VB航空公司管理信息系统 第13页
 ‘选择制定客机编号的有关信息
            txtSQL = "select * from planeInfo where planeNO = '" & Trim(ticketCsum) & "'"
            Set mrcc = ExecuteSQL(txtSQL, MsgText)
            ‘判断数据集对象是否为空
            If Not mrcc.EOF Then
                ticketCsum = mrcc.Fields(4)
                ticketMsum = mrcc.Fields(5)
                ticketFsum = mrcc.Fields(6)

            End If
            ‘关闭数据集对象
            mrcc.Close
        End If
    ElseIf Index = 4 Then
        ‘选择相应客户姓名的记录
        txtSQL = "select customerNO,customerType from customerInfo where customerName = '" & Trim(Combo1(4)) & "'"
        Set mrcc = ExecuteSQL(txtSQL, MsgText)
       ‘判断数据集对象是否为空
        If Not mrcc.EOF Then
            txtcustomer = mrcc.Fields(0)
            Combo1(5).Clear
            Combo1(5).AddItem mrcc.Fields(1)
            Combo1(5).ListIndex = 0
            ‘选择客户对应的客户类型
            txtSQL = "select distinct discount from customerType where ctypeName = '" & Trim(Combo1(5)) & "'"
            Set mrcd = ExecuteSQL(txtSQL, MsgText)
           ‘判断数据集对象是否为空
            If Not mrcd.EOF Then
                Combo1(6).Clear
                Combo1(6).AddItem mrcd.Fields(0)
                Combo1(6).ListIndex = 0
            End If
           ‘关闭数据集对象
            mrcd.Close
        End If
       ‘关闭数据集对象
        mrcc.Close
           
    End If
End Sub
选择航线信息和客户信息后,输入机票日期,单击“保存”按钮,订票信息保存到数据库中。除了对数据格式的检查,还要检查相应航班是否满员。代码如下:
Private Sub cmdSave_Click()
    Dim intCount As Integer
    Dim sMeg As String
    Dim MsgText As String

    ‘判断列表框中内容是否为空
    For intCount = 0 To 6
        If Trim(Combo1(intCount) & " ") = "" Then
            Select Case intCount
                Case 0
                    sMeg = "出发城市"
                Case 1
                    sMeg = "到达城市"
                Case 2
                    sMeg = "舱位类型"
                Case 3
                    sMeg = ""
                Case 4
                    sMeg = "顾客姓名"
                Case 5
                    sMeg = ""
                Case 6
                    sMeg = ""
            End Select
            sMeg = sMeg & "不能为空!"
            MsgBox sMeg, vbOKOnly + vbExclamation, "警告"
            Combo1(intCount).SetFocus
            Exit Sub
        End If
    Next intCount
    ‘判断机票日期是否输入
    If Trim(txtItem(0)) = "" Then
        sMeg = "出发日期不能为空!"
        MsgBox sMeg, vbOKOnly + vbExclamation, "警告"
        txtItem(0).SetFocus
        Exit Sub
    End If
    ‘判断输入机票日期是否为日期型数据
    If IsDate(txtItem(0)) Then
        txtItem(0) = Format(txtItem(0), "yyyy-mm-dd")
    Else
        MsgBox "时间应输入日期(yyyy-mm-dd)!", vbOKOnly + vbExclamation, "警告"
        txtItem(0).SetFocus
        Exit Sub

    End If
    '判断是否有相同内容的记录
    txtSQL = "select * from ticketInfo where ticketNO<>'" & Trim(txtticket) & "' and customerNO ='" & Trim(txtcustomer) & "' and ticketDate = '" & Trim(txtItem(0)) & "'"
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    If mrc.EOF = False Then
        MsgBox "已经存在相同顾客订票的记录!", vbOKOnly + vbExclamation, "警告"
        txtItem(1).SetFocus
        Exit Sub
    End If
    '先删除已有记录
    txtSQL = "delete from ticketInfo where ticketNO='" & Trim(txtticket) & "'"
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    '判断航班是否满员
    txtSQL = "select * from ticketInfo where airlineNO = '" & Trim(txtairline) & " ' and ticketDate = '" & Trim(txtItem(0)) & "' and serviceType = '" & Trim(Combo1(2)) & "'"
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    ‘判断数据集对象是否为空
    If Not mrc.EOF Then
        If Combo1(2) = "经济舱" Then
            If mrc.RecordCount > (ticketCsum - 1) Then
                MsgBox "对不起,该航班经济舱已经满员", vbOKOnly + vbExclamation, "警告"
                Exit Sub
            End If
        ElseIf Combo1(2) = "公务舱" Then
            If mrc.RecordCount > (ticketMsum - 1) Then
                MsgBox "对不起,该航班公务舱已经满员", vbOKOnly + vbExclamation, "警告"
                Exit Sub
            End If
        Else
            If mrc.RecordCount > (ticketFsum - 1) Then
                MsgBox "对不起,该航班头等舱已经满员", vbOKOnly + vbExclamation, "警告"
                Exit Sub
            End If
        End If
    End If
    ‘关闭数据集对象
    mrc.Close
    '再加入新记录

    txtSQL = "select * from ticketInfo"
    Set mrc = ExecuteSQL(txtSQL, MsgText)
    mrc.AddNew
    mrc.Fields(0) = txtticket
    mrc.Fields(1) = txtcustomer
    For intCount = 2 To 4
        mrc.Fields(intCount) = Trim(Combo1(intCount + 2))
    Next intCount
    mrc.Fields(5) = txtairline
    For intCount = 6 To 7
        mrc.Fields(intCount) = Trim(Combo1(intCount - 6))
    Next intCount
    mrc.Fields(8) = Trim(txtItem(0))
    For intCount = 9 To 10
        mrc.Fields(intCount) = Trim(Combo1(intCount - 7))
    Next intCount
    mrc.Fields(11) = Trim(Combo1(3) * Combo1(6) / 100)
    mrc.Fields(12) = txtItem(1)
    ‘更新数据集
    mrc.Update
    ‘关闭数据集对象

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