form4.vb

是一个酒店管理信息系统。 用VB.NET以及SQL开发 包括程序

Imports System.Data.SqlClient
Imports System.Data
Public Class Form4
    Inherits System.Windows.Forms.Form
    Private main As New Form2
#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
    Public Sub New(ByRef main As Form2)
        MyBase.New()
        Me.main = main
        '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 DataGrid1 As System.Windows.Forms.DataGrid
    Friend WithEvents GroupBox1 As System.Windows.Forms.GroupBox
    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 TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    Friend WithEvents ComboBox2 As System.Windows.Forms.ComboBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DataGrid1 = New System.Windows.Forms.DataGrid
        Me.GroupBox1 = New System.Windows.Forms.GroupBox
        Me.ComboBox2 = New System.Windows.Forms.ComboBox
        Me.ComboBox1 = New System.Windows.Forms.ComboBox
        Me.TextBox2 = New System.Windows.Forms.TextBox
        Me.TextBox1 = New System.Windows.Forms.TextBox
        Me.Label4 = New System.Windows.Forms.Label
        Me.Label3 = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button4 = New System.Windows.Forms.Button
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.GroupBox1.SuspendLayout()
        Me.SuspendLayout()
        '
        'DataGrid1
        '
        Me.DataGrid1.BackColor = System.Drawing.SystemColors.Info
        Me.DataGrid1.CaptionText = "房台信息"
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(207, 0)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(313, 208)
        Me.DataGrid1.TabIndex = 0
        Me.DataGrid1.Tag = ""
        '
        'GroupBox1
        '
        Me.GroupBox1.BackColor = System.Drawing.Color.LightSteelBlue
        Me.GroupBox1.Controls.Add(Me.ComboBox2)
        Me.GroupBox1.Controls.Add(Me.ComboBox1)
        Me.GroupBox1.Controls.Add(Me.TextBox2)
        Me.GroupBox1.Controls.Add(Me.TextBox1)
        Me.GroupBox1.Controls.Add(Me.Label4)
        Me.GroupBox1.Controls.Add(Me.Label3)
        Me.GroupBox1.Controls.Add(Me.Label2)
        Me.GroupBox1.Controls.Add(Me.Label1)
        Me.GroupBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.GroupBox1.Location = New System.Drawing.Point(7, 7)
        Me.GroupBox1.Name = "GroupBox1"
        Me.GroupBox1.Size = New System.Drawing.Size(200, 201)
        Me.GroupBox1.TabIndex = 1
        Me.GroupBox1.TabStop = False
        Me.GroupBox1.Text = "房台设置"
        '
        'ComboBox2
        '
        Me.ComboBox2.BackColor = System.Drawing.SystemColors.Info
        Me.ComboBox2.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboBox2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ComboBox2.Items.AddRange(New Object() {"使用", "空闲", "预定"})
        Me.ComboBox2.Location = New System.Drawing.Point(87, 156)
        Me.ComboBox2.Name = "ComboBox2"
        Me.ComboBox2.Size = New System.Drawing.Size(93, 24)
        Me.ComboBox2.TabIndex = 8
        '
        'ComboBox1
        '
        Me.ComboBox1.BackColor = System.Drawing.SystemColors.Info
        Me.ComboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
        Me.ComboBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ComboBox1.Items.AddRange(New Object() {"中餐厅", "西餐厅", "房台"})
        Me.ComboBox1.Location = New System.Drawing.Point(87, 67)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(93, 24)
        Me.ComboBox1.TabIndex = 7
        '
        'TextBox2
        '
        Me.TextBox2.BackColor = System.Drawing.SystemColors.Info
        Me.TextBox2.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox2.Location = New System.Drawing.Point(87, 111)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(93, 22)
        Me.TextBox2.TabIndex = 5
        Me.TextBox2.Text = ""
        '
        'TextBox1
        '
        Me.TextBox1.BackColor = System.Drawing.SystemColors.Info
        Me.TextBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.TextBox1.Location = New System.Drawing.Point(87, 22)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(93, 22)
        Me.TextBox1.TabIndex = 4
        Me.TextBox1.Text = ""
        '
        'Label4
        '
        Me.Label4.Font = New System.Drawing.Font("SimSun", 12.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label4.Location = New System.Drawing.Point(8, 160)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(72, 21)
        Me.Label4.TabIndex = 3
        Me.Label4.Text = "状态："
        '
        'Label3
        '
        Me.Label3.Font = New System.Drawing.Font("SimSun", 12.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label3.Location = New System.Drawing.Point(8, 120)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(72, 22)
        Me.Label3.TabIndex = 2
        Me.Label3.Text = "价格："
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("SimSun", 12.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label2.Location = New System.Drawing.Point(8, 72)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(72, 21)
        Me.Label2.TabIndex = 1
        Me.Label2.Text = "类型："
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("SimSun", 12.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.Location = New System.Drawing.Point(8, 24)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(72, 22)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "房台号："
        '
        'Button1
        '
        Me.Button1.BackColor = System.Drawing.Color.LightSteelBlue
        Me.Button1.Location = New System.Drawing.Point(32, 216)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(80, 32)
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "添加"
        '
        'Button2
        '
        Me.Button2.BackColor = System.Drawing.Color.LightSteelBlue
        Me.Button2.Location = New System.Drawing.Point(144, 216)
        Me.Button2.Name = "Button2"
        Me.Button2.Size = New System.Drawing.Size(80, 32)
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "删除"
        '
        'Button3
        '
        Me.Button3.BackColor = System.Drawing.Color.LightSteelBlue
        Me.Button3.Location = New System.Drawing.Point(256, 216)
        Me.Button3.Name = "Button3"
        Me.Button3.Size = New System.Drawing.Size(80, 32)
        Me.Button3.TabIndex = 4
        Me.Button3.Text = "修改/保存"
        '
        'Button4
        '
        Me.Button4.BackColor = System.Drawing.Color.LightSteelBlue
        Me.Button4.Location = New System.Drawing.Point(368, 216)
        Me.Button4.Name = "Button4"
        Me.Button4.Size = New System.Drawing.Size(80, 32)
        Me.Button4.TabIndex = 5
        Me.Button4.Text = "退出"
        '
        'Form4
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.BackColor = System.Drawing.Color.LightSteelBlue
        Me.ClientSize = New System.Drawing.Size(520, 258)
        Me.Controls.Add(Me.Button4)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.GroupBox1)
        Me.Controls.Add(Me.DataGrid1)
        Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.MaximizeBox = False
        Me.Name = "Form4"
        Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
        Me.Text = "房台信息设置"
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.GroupBox1.ResumeLayout(False)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Dim cn As New SqlConnection("data source=(local);initial catalog=酒店管理系统;uid=sa;pwd=;")
    Dim cm As New SqlCommand("select * from 房台信息", cn)
    Dim da As New SqlDataAdapter(cm)
    Dim ds As New DataSet
    Private Sub Form4_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        cn.Open()
        ds.Clear()
        da.Fill(ds, "房台信息")
        cn.Close()
        DataGrid1.DataSource = ds.Tables("房台信息")
        TextBox1.DataBindings.Add("text", ds.Tables("房台信息"), "房台号")
        ComboBox1.DataBindings.Add("text", DataGrid1.DataSource, "类型")
        TextBox2.DataBindings.Add("text", ds.Tables("房台信息"), "价格")
        ComboBox2.DataBindings.Add("text", ds.Tables("房台信息"), "状态")
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Select Case ""
                Case TextBox1.Text
                    MessageBox.Show("房台号不能为空!", "警告:", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1)
                Case ComboBox1.Text
                    MessageBox.Show("请选择一个房台类型!", "警告:", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1)
                Case TextBox2.Text
                    MessageBox.Show("请输入您为该房间设定的价格!", "警告:", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1)
                Case ComboBox2.Text
                    MessageBox.Show("请选择一个状态信息!", "警告:", MessageBoxButtons.OK, MessageBoxIcon.Warning, MessageBoxDefaultButton.Button1)
                Case Else
                    Dim newrow As DataRow = ds.Tables("房台信息").NewRow
                    newrow(0) = Trim(TextBox1.Text)
                    newrow(1) = Trim(ComboBox1.Text)
                    newrow(2) = Trim(TextBox2.Text)
                    newrow(3) = Trim(ComboBox2.Text)
                    ds.Tables("房台信息").Rows.Add(newrow)
                    cn.Open()
                    cm.CommandText = "insert into 房台信息(房台号,类型,价格,状态) values ('" & newrow(0).ToString & "','" & newrow(1).ToString & "','" & newrow(2).ToString & "','" & newrow(3).ToString & "')"
                    cm.ExecuteNonQuery()
                    cn.Close()
                    DataGrid1.Refresh()
            End Select
        Catch ex As Exception
            MsgBox(ex.Message)

        End Try


    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).BeginEdit()
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).Delete()
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).EndEdit()
        Dim builder As New SqlCommandBuilder(da)
        da.Update(ds.Tables("房台信息"))
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        '由于combobox 的值已经和数据源绑定,所以当其选择框内容改变时就会定位到相应的记录,所以combobox的值修改时不能使用beginedit ,endedit方法,需要在dataset中设置它的值,此方法还要有绑定环境才能使用.

        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).BeginEdit()
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).Item("类型") = ComboBox1.Text.Trim
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).Item("状态") = ComboBox2.Text.Trim
        ds.Tables("房台信息").Rows(DataGrid1.CurrentRowIndex()).EndEdit()
        Dim builder As New SqlCommandBuilder(da)
        da.Update(ds.Tables("房台信息"))
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Me.main.Show()
        Me.main.WindowState = FormWindowState.Normal
        Me.Close()
    End Sub
End Class