客机信息查询.vb

这是个用VB编写的机票销售与查询管理系统

Imports System.Data
Imports System.Data.SqlClient
Public Class 客机信息查询
    Inherits System.Windows.Forms.Form

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents ComboBox2 As System.Windows.Forms.ComboBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents RadioButton1 As System.Windows.Forms.RadioButton
    Friend WithEvents RadioButton2 As System.Windows.Forms.RadioButton
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.ComboBox2 = New System.Windows.Forms.ComboBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.RadioButton1 = New System.Windows.Forms.RadioButton
        Me.RadioButton2 = New System.Windows.Forms.RadioButton
        Me.SuspendLayout()
        '
        'ComboBox1
        '
        Me.ComboBox1.Location = New System.Drawing.Point(192, 32)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(160, 20)
        Me.ComboBox1.TabIndex = 2
        '
        'ComboBox2
        '
        Me.ComboBox2.Location = New System.Drawing.Point(192, 112)
        Me.ComboBox2.Name = "ComboBox2"
        Me.ComboBox2.Size = New System.Drawing.Size(160, 20)
        Me.ComboBox2.TabIndex = 3
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(40, 176)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(120, 32)
        Me.Button1.TabIndex = 4
        Me.Button1.Text = "确定(&o)"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(232, 176)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(128, 32)
        Me.Button2.TabIndex = 5
        Me.Button2.Text = "取消(&x)"
        '
        'RadioButton1
        '
        Me.RadioButton1.Checked = True
        Me.RadioButton1.Location = New System.Drawing.Point(48, 32)
        Me.RadioButton1.Name = "RadioButton1"
        Me.RadioButton1.TabIndex = 6
        Me.RadioButton1.TabStop = True
        Me.RadioButton1.Text = "客机编号"
        '
        'RadioButton2
        '
        Me.RadioButton2.Location = New System.Drawing.Point(48, 112)
        Me.RadioButton2.Name = "RadioButton2"
        Me.RadioButton2.TabIndex = 7
        Me.RadioButton2.Text = "客机类型"
        '
        '客机信息查询
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(456, 238)
        Me.Controls.Add(Me.RadioButton2)
        Me.Controls.Add(Me.RadioButton1)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.ComboBox2)
        Me.Controls.Add(Me.ComboBox1)
        Me.Name = "客机信息查询"
        Me.Text = "客机信息查询"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim my_class As New class1

    Private Sub Form5_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        ct = 21
        my_class.init()
        Dim ds As DataSet
        Dim con As String
        Dim count, i As Integer
        con = "select * from planeinfo"
        ds = my_class.query(con)
        count = ds.Tables(0).Rows.Count
        For i = 0 To count - 1
            my_class.dr = ds.Tables(0).Rows(i)
            ComboBox1.Items.Add(CStr(my_class.dr(0)))
            ComboBox2.Items.Add(CStr(my_class.dr(1)))
        Next
        If RadioButton1.Checked = True Then
            ComboBox2.Enabled = False
        ElseIf RadioButton2.Checked = True Then
            ComboBox1.Enabled = False
        End If
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim ds As DataSet
        Dim con As String
        Dim str As String
        Dim count As Integer
        If RadioButton1.Checked = True Then
            ComboBox2.Text = ""
            str = ComboBox1.Text
            con = "select * from planeinfo where planeno='" + str + "'"
            ds = my_class.query(con)
            count = ds.Tables(0).Rows.Count
            If (count > 0 And ComboBox1.Text <> "") Then
                my_class.dr = ds.Tables(0).Rows(0)
                ComboBox2.Text = CStr(my_class.dr("planetype"))
            Else
                MsgBox("客机编号选择有误，请重新选择！")
                ComboBox1.SelectAll()
                ComboBox2.Text = ""
            End If
        ElseIf RadioButton2.Checked = True Then
            ComboBox1.Text = ""
            str = ComboBox2.Text
            con = "select * from planeinfo where planetype='" + str + "'"
            ds = my_class.query(con)
            count = ds.Tables(0).Rows.Count
            If (count > 0 And ComboBox2.Text <> "") Then
                my_class.dr = ds.Tables(0).Rows(0)
                ComboBox1.Text = CStr(my_class.dr("planeno"))
            Else
                MsgBox("客机类型选择有误，请重新选择！")
                ComboBox2.SelectAll()
                ComboBox1.Text = ""
            End If
        End If
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Me.Close()
    End Sub

    Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged
        If RadioButton1.Checked = True Then
            ComboBox1.Enabled = True
            ComboBox2.Enabled = False
        End If
    End Sub

    Private Sub RadioButton2_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton2.CheckedChanged
        If RadioButton2.Checked = True Then
            ComboBox1.Enabled = False
            ComboBox2.Enabled = True

        End If
    End Sub

    Private Sub 客机信息查询_Activated(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Activated
        Dim mdifrm As New MDIForm1
        mdifrm = Me.MdiParent
        mdifrm.StatusBar1.Panels(0).Text = Me.Text
    End Sub
End Class