form1.vb

编程之道VB.NETt程序设计入门-589M.zip

Public Class Form1
    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 dgMaster As System.Windows.Forms.DataGrid
    Friend WithEvents dgDetail As System.Windows.Forms.DataGrid
    Friend WithEvents OrdersAndDetails1 As OrdersAndDetails
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.dgMaster = New System.Windows.Forms.DataGrid()
        Me.dgDetail = New System.Windows.Forms.DataGrid()
        Me.OrdersAndDetails1 = New OrdersAndDetails()
        CType(Me.dgMaster, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.dgDetail, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.OrdersAndDetails1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'dgMaster
        '
        Me.dgMaster.DataMember = ""
        Me.dgMaster.DataSource = Me.OrdersAndDetails1.Orders
        Me.dgMaster.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.dgMaster.Location = New System.Drawing.Point(8, 8)
        Me.dgMaster.Name = "dgMaster"
        Me.dgMaster.Size = New System.Drawing.Size(392, 144)
        Me.dgMaster.TabIndex = 0
        '
        'dgDetail
        '
        Me.dgDetail.DataMember = "OrdersDetails"
        Me.dgDetail.DataSource = Me.OrdersAndDetails1.Orders
        Me.dgDetail.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.dgDetail.Location = New System.Drawing.Point(8, 160)
        Me.dgDetail.Name = "dgDetail"
        Me.dgDetail.Size = New System.Drawing.Size(392, 144)
        Me.dgDetail.TabIndex = 1
        '
        'OrdersAndDetails1
        '
        Me.OrdersAndDetails1.DataSetName = "OrdersAndDetails"
        Me.OrdersAndDetails1.Locale = New System.Globalization.CultureInfo("en-US")
        Me.OrdersAndDetails1.Namespace = "http://tempuri.org/OrdersAndDetails.xsd"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(408, 310)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.dgDetail, Me.dgMaster})
        Me.Name = "Form1"
        Me.Text = "Form1"
        CType(Me.dgMaster, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.dgDetail, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.OrdersAndDetails1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Dim daOrders As New SqlClient.SqlDataAdapter()
        Dim daDetails As New SqlClient.SqlDataAdapter()

        '数据库连接
        Dim conn As New SqlClient.SqlConnection()

        conn.ConnectionString = "Data Source=(local);Initial Catalog=Northwind;Integrated Security=SSPI"

        '设置读取数据的SQL命令
        daOrders.SelectCommand = New SqlClient.SqlCommand("Select OrderID, OrderDate, Freight, ShipName From Orders", conn)
        daDetails.SelectCommand = New SqlClient.SqlCommand("Select OrderID, UnitPrice, Discount From [Order Details]", conn)

        '打开数据库连接，填充两个数据表
        conn.Open()

        daOrders.Fill(OrdersAndDetails1.Orders)
        daDetails.Fill(OrdersAndDetails1.Details)

        conn.Close()
    End Sub
End Class