form1.vb

黑魔方vb.net数据库开发第4章第2节

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 Label1 As System.Windows.Forms.Label
    Friend WithEvents ComboBox1 As System.Windows.Forms.ComboBox
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox
    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 Button1 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.ComboBox1 = New System.Windows.Forms.ComboBox()
        Me.TextBox1 = New System.Windows.Forms.TextBox()
        Me.TextBox2 = New System.Windows.Forms.TextBox()
        Me.TextBox3 = New System.Windows.Forms.TextBox()
        Me.Label2 = New System.Windows.Forms.Label()
        Me.Label3 = New System.Windows.Forms.Label()
        Me.Label4 = New System.Windows.Forms.Label()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(32, 8)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(136, 24)
        Me.Label1.TabIndex = 0
        Me.Label1.Text = "选择订单号"
        '
        'ComboBox1
        '
        Me.ComboBox1.Location = New System.Drawing.Point(160, 8)
        Me.ComboBox1.Name = "ComboBox1"
        Me.ComboBox1.Size = New System.Drawing.Size(192, 23)
        Me.ComboBox1.TabIndex = 1
        Me.ComboBox1.Text = "ComboBox1"
        '
        'TextBox1
        '
        Me.TextBox1.Location = New System.Drawing.Point(184, 56)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(144, 25)
        Me.TextBox1.TabIndex = 2
        Me.TextBox1.Text = ""
        '
        'TextBox2
        '
        Me.TextBox2.Location = New System.Drawing.Point(184, 96)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(144, 25)
        Me.TextBox2.TabIndex = 3
        Me.TextBox2.Text = ""
        '
        'TextBox3
        '
        Me.TextBox3.Location = New System.Drawing.Point(184, 136)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(144, 25)
        Me.TextBox3.TabIndex = 4
        Me.TextBox3.Text = ""
        '
        'Label2
        '
        Me.Label2.Location = New System.Drawing.Point(32, 56)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(136, 24)
        Me.Label2.TabIndex = 6
        Me.Label2.Text = "客户号"
        '
        'Label3
        '
        Me.Label3.Location = New System.Drawing.Point(32, 96)
        Me.Label3.Name = "Label3"
        Me.Label3.Size = New System.Drawing.Size(144, 32)
        Me.Label3.TabIndex = 7
        Me.Label3.Text = "雇员号"
        '
        'Label4
        '
        Me.Label4.Location = New System.Drawing.Point(32, 136)
        Me.Label4.Name = "Label4"
        Me.Label4.Size = New System.Drawing.Size(136, 24)
        Me.Label4.TabIndex = 8
        Me.Label4.Text = "订单日期"
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(136, 200)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(104, 32)
        Me.Button1.TabIndex = 9
        Me.Button1.Text = "查询"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(8, 18)
        Me.ClientSize = New System.Drawing.Size(408, 264)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.Label4, Me.Label3, Me.Label2, Me.TextBox3, Me.TextBox2, Me.TextBox1, Me.ComboBox1, Me.Label1})
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Dim con As New ADODB.Connection()
    Dim rs As New ADODB.Recordset()
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim strsql As String
        Dim rs As New ADODB.Recordset()
        con.Open("Provider=SQLOLEDB.1;Integrated Security=SSPI; Persist Security Info=False;" _
        & "Database=Northwind")
        rs.Open("select * from orders", con)
        Do While Not rs.EOF
            ComboBox1.Items.Add(rs("orderid").Value)
            rs.MoveNext()
        Loop
    End Sub

    Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim cmd As New ADODB.Command()
        cmd.ActiveConnection = con
        cmd.CommandText = "myproc1"
        cmd.CommandType = ADODB.CommandTypeEnum.adCmdStoredProc
        cmd.Parameters.Append(cmd.CreateParameter("@orderid", ADODB.DataTypeEnum.adInteger, ADODB.ParameterDirectionEnum.adParamInput))
        cmd.Parameters("@orderid").Value = ComboBox1.Text
        Dim rs1 As New ADODB.Recordset()
        rs1 = cmd.Execute()
        TextBox1.Text = rs1("customerid").Value
        TextBox2.Text = rs1("employeeid").Value
        TextBox3.Text = rs1("orderdate").Value
    End Sub
End Class