frmh.vb

需要在.net环境下运行需要安装框架

Imports System.Data.OleDb
Public Class FRMH
    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

    '窗体重写处置以清理组件列表。
    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 Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label3 As System.Windows.Forms.Label
    Friend WithEvents Label4 As System.Windows.Forms.Label
    Friend WithEvents Label5 As System.Windows.Forms.Label
    Friend WithEvents tbHName As System.Windows.Forms.TextBox
    Friend WithEvents tbHOName As System.Windows.Forms.TextBox
    Friend WithEvents cbHSold As System.Windows.Forms.ComboBox
    Friend WithEvents nudHPrice As System.Windows.Forms.NumericUpDown
    Friend WithEvents tbHRemark As System.Windows.Forms.TextBox
    Friend WithEvents Label6 As System.Windows.Forms.Label
    Friend WithEvents nudHID As System.Windows.Forms.NumericUpDown
    Friend WithEvents btnADD As System.Windows.Forms.Button
    Friend WithEvents btnDel As System.Windows.Forms.Button
    Friend WithEvents benChg As System.Windows.Forms.Button
    Friend WithEvents btnSure As System.Windows.Forms.Button
    Friend WithEvents btnLook As System.Windows.Forms.Button
    Friend WithEvents btnCancle As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.Label5 = New System.Windows.Forms.Label()
        Me.tbHName = New System.Windows.Forms.TextBox()
        Me.tbHOName = New System.Windows.Forms.TextBox()
        Me.cbHSold = New System.Windows.Forms.ComboBox()
        Me.nudHPrice = New System.Windows.Forms.NumericUpDown()
        Me.tbHRemark = New System.Windows.Forms.TextBox()
        Me.btnADD = New System.Windows.Forms.Button()
        Me.btnDel = New System.Windows.Forms.Button()
        Me.benChg = New System.Windows.Forms.Button()
        Me.btnSure = New System.Windows.Forms.Button()
        Me.Label6 = New System.Windows.Forms.Label()
        Me.nudHID = New System.Windows.Forms.NumericUpDown()
        Me.btnLook = New System.Windows.Forms.Button()
        Me.btnCancle = New System.Windows.Forms.Button()
        CType(Me.nudHPrice, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.nudHID, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(232, 26)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(48, 16)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "名称："
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(232, 65)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(48, 16)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "房主："
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(8, 65)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(48, 16)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "价格："
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(64, 104)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(32, 16)
        Me.Label4.TabIndex = 3
        Me.Label4.Text = "已售"
        '
        'Label5
        '
        Me.Label5.Location = New System.Drawing.Point(8, 104)
        Me.Label5.Name = "Label5"
        Me.Label5.Size = New System.Drawing.Size(48, 16)
        Me.Label5.TabIndex = 4
        Me.Label5.Text = "备注："
        '
        'tbHName
        '
        Me.tbHName.Location = New System.Drawing.Point(328, 24)
        Me.tbHName.Name = "tbHName"
        Me.tbHName.Size = New System.Drawing.Size(120, 21)
        Me.tbHName.TabIndex = 5
        Me.tbHName.Text = ""
        '
        'tbHOName
        '
        Me.tbHOName.Location = New System.Drawing.Point(328, 63)
        Me.tbHOName.Name = "tbHOName"
        Me.tbHOName.Size = New System.Drawing.Size(120, 21)
        Me.tbHOName.TabIndex = 6
        Me.tbHOName.Text = ""
        '
        'cbHSold
        '
        Me.cbHSold.Items.AddRange(New Object() {"是", "否"})
        Me.cbHSold.Location = New System.Drawing.Point(104, 102)
        Me.cbHSold.Name = "cbHSold"
        Me.cbHSold.Size = New System.Drawing.Size(40, 20)
        Me.cbHSold.TabIndex = 7
        Me.cbHSold.Text = "否"
        '
        'nudHPrice
        '
        Me.nudHPrice.Location = New System.Drawing.Point(72, 63)
        Me.nudHPrice.Name = "nudHPrice"
        Me.nudHPrice.TabIndex = 8
        '
        'tbHRemark
        '
        Me.tbHRemark.Location = New System.Drawing.Point(8, 136)
        Me.tbHRemark.Multiline = True
        Me.tbHRemark.Name = "tbHRemark"
        Me.tbHRemark.Size = New System.Drawing.Size(440, 144)
        Me.tbHRemark.TabIndex = 9
        Me.tbHRemark.Text = ""
        '
        'btnADD
        '
        Me.btnADD.Location = New System.Drawing.Point(256, 104)
        Me.btnADD.Name = "btnADD"
        Me.btnADD.Size = New System.Drawing.Size(48, 23)
        Me.btnADD.TabIndex = 10
        Me.btnADD.Text = "添加"
        '
        'btnDel
        '
        Me.btnDel.Location = New System.Drawing.Point(304, 104)
        Me.btnDel.Name = "btnDel"
        Me.btnDel.Size = New System.Drawing.Size(48, 23)
        Me.btnDel.TabIndex = 11
        Me.btnDel.Text = "删除"
        '
        'benChg
        '
        Me.benChg.Location = New System.Drawing.Point(352, 104)
        Me.benChg.Name = "benChg"
        Me.benChg.Size = New System.Drawing.Size(48, 23)
        Me.benChg.TabIndex = 12
        Me.benChg.Text = "更改"
        '
        'btnSure
        '
        Me.btnSure.Location = New System.Drawing.Point(400, 104)
        Me.btnSure.Name = "btnSure"
        Me.btnSure.Size = New System.Drawing.Size(48, 23)
        Me.btnSure.TabIndex = 13
        Me.btnSure.Text = "确定"
        '
        'Label6
        '
        Me.Label6.Location = New System.Drawing.Point(8, 26)
        Me.Label6.Name = "Label6"
        Me.Label6.Size = New System.Drawing.Size(48, 16)
        Me.Label6.TabIndex = 14
        Me.Label6.Text = "房号："
        '
        'nudHID
        '
        Me.nudHID.Location = New System.Drawing.Point(72, 24)
        Me.nudHID.Maximum = New Decimal(New Integer() {10000, 0, 0, 0})
        Me.nudHID.Name = "nudHID"
        Me.nudHID.TabIndex = 15
        '
        'btnLook
        '
        Me.btnLook.Location = New System.Drawing.Point(208, 104)
        Me.btnLook.Name = "btnLook"
        Me.btnLook.Size = New System.Drawing.Size(48, 23)
        Me.btnLook.TabIndex = 16
        Me.btnLook.Text = "查看"
        '
        'btnCancle
        '
        Me.btnCancle.Location = New System.Drawing.Point(160, 104)
        Me.btnCancle.Name = "btnCancle"
        Me.btnCancle.Size = New System.Drawing.Size(48, 23)
        Me.btnCancle.TabIndex = 17
        Me.btnCancle.Text = "取消"
        '
        'FRMH
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(456, 285)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.btnCancle, Me.btnLook, Me.nudHID, Me.Label6, Me.btnSure, Me.benChg, Me.btnDel, Me.btnADD, Me.tbHRemark, Me.nudHPrice, Me.cbHSold, Me.tbHOName, Me.tbHName, Me.Label5, Me.Label4, Me.Label3, Me.Label2, Me.Label1})
        Me.Name = "FRMH"
        Me.Text = "FRMH"
        CType(Me.nudHPrice, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.nudHID, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private role As Integer
    Private sqlStr As String
    Private Sub btnADD_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnADD.Click
        role = 1 '标明是增加记录
        nudHID.Enabled = False
        
    End Sub

    Private Sub FRMH_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        role = 0
        nudHID.Enabled = False
    End Sub

    Private Sub btnDel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDel.Click
        role = 2 '标明是删除记录
        nudHID.Enabled = True
    End Sub

    Private Sub benChg_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles benChg.Click
        role = 3 '标明是更改记录
        nudHID.Enabled = True
        
    End Sub

    Private Sub btnSure_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSure.Click
        If role = 0 Then
            MsgBox("请你选择操作类型！", MsgBoxStyle.Exclamation, "OK")
            Exit Sub
        End If
        Dim comm As OleDbCommand  '为了查询
        Dim reader As OleDbDataReader
        If role = 4 Then '根据hID来进行查询
            If nudHID.Text = "" Then
                MsgBox("请输入房号！", MsgBoxStyle.Exclamation, "warning")
                Exit Sub
            End If
            If (conn.State = System.Data.ConnectionState.Closed) Then
                conn.Open()
            End If
            sqlStr = "select hName,hoName,hPrice,hSold,hRemark from house where hID=" & nudHID.Text
            comm = New OleDbCommand(sqlStr, conn)
            reader = comm.ExecuteReader()
            While reader.Read()
                tbHName.Text = reader.GetString(0)
                tbHOName.Text = reader.GetString(1)
                nudHPrice.Text = reader.GetInt32(2)
                cbHSold.Text = reader.GetString(3)
                tbHRemark.Text = reader.GetString(4)
            End While
            conn.Close()
            role = 0
            nudHID.Enabled = False
            MsgBox("succeed!", MsgBoxStyle.Exclamation, "OK")
            Exit Sub
        End If

        Dim dbopera1 As DbOpera
        '删除
        If role = 2 Then
            If nudHID.Text = "" Then
                MsgBox("请输入房号！", MsgBoxStyle.Exclamation, "warning")
                Exit Sub
            Else
                sqlStr = "delete from house where hID=" & nudHID.Text
                dbopera1 = New DbOpera(sqlStr)
                dbopera1.opera()
                MsgBox("Succeed!", MsgBoxStyle.Exclamation, "OK")
                Exit Sub
            End If
        End If
        '更新，插入
        If Not check() Then '检查信息是否完整
            MsgBox("请输入完整的信息！", MsgBoxStyle.Exclamation, "OK")
            Exit Sub
        End If
        If role = 1 Then    '插入
            sqlStr = "insert into house(hName,hoName,hPrice,hSold,hRemark) values('"
            sqlStr = sqlStr & tbHName.Text & "','"
            sqlStr = sqlStr & tbHOName.Text & "',"
            sqlStr = sqlStr & nudHPrice.Text & ",'"
            sqlStr = sqlStr & cbHSold.Text & "','"
            sqlStr = sqlStr & tbHRemark.Text & "')"
        End If
        If role = 3 Then    '更新
            sqlStr = "update house set hName='" & tbHName.Text & "',"
            sqlStr = sqlStr & "hoName='" & tbHOName.Text & "',"
            sqlStr = sqlStr & "hPrice=" & nudHPrice.Text & ","
            sqlStr = sqlStr & "hSold='" & cbHSold.Text & "',"
            sqlStr = sqlStr & "hRemark='" & tbHRemark.Text & "'"
            sqlStr = sqlStr & "where hID=" & nudHID.Text
        End If
        dbopera1 = New DbOpera(sqlStr)
        dbopera1.opera()
        MsgBox("Succeed!", MsgBoxStyle.Exclamation, "OK")
        role = 0
        nudHID.Enabled = False
    End Sub

    Private Function check() As Boolean
        If tbHOName.Text = "" Or tbHName.Text = "" Then
            check = False
        Else
            check = True
        End If
    End Function

    Private Sub btnCancle_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancle.Click
        role = 0
        nudHID.Enabled = False
        tbHName.Text = ""
        tbHOName.Text = ""
        nudHPrice.Text = 0
        cbHSold.Text = "是"
        tbHRemark.Text = "无"
    End Sub

    Private Sub btnLook_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLook.Click
        role = 4
        nudHID.Enabled = True
    End Sub
End Class