form1.vb

本程序利用.net语言开发了访问access数据库的各种功能

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 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 Label1 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.Button1 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'Label1
        '
        Me.Label1.Location = New System.Drawing.Point(56, 32)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(704, 224)
        Me.Label1.TabIndex = 0
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(248, 264)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(280, 48)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Button1"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(792, 318)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.Label1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim cstring As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=E:\VS.Network\shujukulianjie\111.mdb"
        Dim SQLstr As String = "select 名字,二姓,姓氏,父母姓名,地址 from 学生 where 二姓='无'"
        Dim strrow As String = ""
        Dim mycon As New OleDb.OleDbConnection(cstring)
        Try
            mycon.Open()
            MessageBox.Show("连接")
        Catch oledbe As OleDb.OleDbException
            MsgBox("shibai")
            Exit Sub
        End Try
        Dim mycom As New OleDb.OleDbCommand
        mycom.Connection = mycon
        mycom.CommandType = CommandType.Text
        mycom.CommandText = SQLstr
        Dim mydatareader As OleDb.OleDbDataReader = mycom.ExecuteReader
        Label1.Text = ""
        Do While (mydatareader.Read())
            strrow = mydatareader.GetString(0) + "   "
            strrow = strrow + mydatareader.GetString(1) + "   "
            strrow = strrow + mydatareader.GetString(2) + "   "
            strrow = strrow + mydatareader.GetString(3) + "   "
            strrow = strrow + mydatareader.GetString(4) + "   "
            'strrow = strrow + mydatareader.GetString(5) + "   "
            Label1.Text = Label1.Text + strrow + Chr(10) + Chr(13)
        Loop
        mydatareader.Close()
        mycon.Close()




    End Sub
End Class