form1.vb

Mastering VBNet Include Source Code

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    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
    Friend WithEvents SqlConnection1 As System.Data.SqlClient.SqlConnection
    Friend WithEvents SqlCommand1 As System.Data.SqlClient.SqlCommand
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents ListBox1 As System.Windows.Forms.ListBox

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.Container

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.ListBox1 = New System.Windows.Forms.ListBox()
        Me.SqlConnection1 = New System.Data.SqlClient.SqlConnection()
        Me.SqlCommand1 = New System.Data.SqlClient.SqlCommand()
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Font = New System.Drawing.Font("Verdana", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Button1.Location = New System.Drawing.Point(12, 190)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(164, 23)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Read Categories"
        '
        'ListBox1
        '
        Me.ListBox1.Font = New System.Drawing.Font("Verdana", 9.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.ListBox1.ItemHeight = 14
        Me.ListBox1.Location = New System.Drawing.Point(10, 12)
        Me.ListBox1.Name = "ListBox1"
        Me.ListBox1.Size = New System.Drawing.Size(164, 172)
        Me.ListBox1.TabIndex = 1
        '
        'SqlConnection1
        '
        Me.SqlConnection1.ConnectionString = "data source=(local);initial catalog=Northwind;persist security info=False;user id" & _
        "=sa;workstation id=PROTSERVER;packet size=4096"
        '
        'SqlCommand1
        '
        Me.SqlCommand1.CommandText = "SELECT CategoryID, CategoryName FROM dbo.Categories"
        Me.SqlCommand1.Connection = Me.SqlConnection1
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(184, 223)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.ListBox1, Me.Button1})
        Me.Name = "Form1"
        Me.Text = "DataReader Demo"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        SqlConnection1.Open()
        Dim SQLReader As System.Data.SqlClient.SqlDataReader
        SQLReader = SqlCommand1.ExecuteReader()
        While SQLReader.Read
            ListBox1.Items.Add(SQLReader.Item("CategoryID") & vbTab & SQLReader.Item("CategoryName"))
        End While
        SqlConnection1.Close()
    End Sub
End Class