Imports System.Data.OleDb
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim connetionString As String
        Dim cnn As OleDbConnection
        Dim cmd As OleDbCommand
        Dim sql As String
        Dim reader As OleDbDataReader

        connetionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Your mdb filename;"
        sql = "Your SQL Statement Here like Select * from product"

        cnn = New OleDbConnection(connetionString)
        Try
            cnn.Open()
            cmd = New OleDbCommand(sql, cnn)
            reader = cmd.ExecuteReader()
            While reader.Read()
                MsgBox(reader.Item(0) & "  -  " & reader.Item(1) & "  -  " & reader.Item(2))
            End While
            reader.Close()
            cmd.Dispose()
            cnn.Close()
        Catch ex As Exception
            MsgBox("Can not open connection ! ")
        End Try
    End Sub
End Class