ช่วยด้วยครับ รวบกวนดูโค๊ดให้หน่อยครับ พอดีแก้จาก SQL เป็น access แล้ว Error นะครับ

Option Explicit On
Option Strict On
Imports System.Data
Imports System.Data.OleDb
Imports System.Drawing.Imaging
Imports System.Drawing.Printing
Public Class frmSale
    Dim strConn As String
    Dim Conn As New OleDbConnection
    Dim da As OleDbDataAdapter
    Dim ds As New DataSet
    Dim strSQL As String
    Dim Check As Boolean
    Dim LastRecord As Long
    Dim dblSubTotal, dblRecieve, dblChange As Double
    Dim IsFindProduct, IsFindMember, IsFindSale, IsFindSaleDetail As Boolean
    '----------------------ตัวแปรสำหรับพิมพ์ใบเสร็จ----------------------
    Dim lngO_ID As Long = 0
    Dim UseFont As New Font("MS Sans Serif", 10)
    Dim prDoc As New PrintDocument()
    Dim prDlg As New PrintDialog()
    Private Sub AddEdit()
        cmdAdd.Enabled = False
        cmdSave.Enabled = True
        cmdCancel.Enabled = True
        txtM_ID.Enabled = True
        txtP_ID.Enabled = True
        cmdAddList.Enabled = True
    End Sub
    Private Sub SaveCancel()
        cmdAdd.Enabled = True
        cmdSave.Enabled = False
        cmdCancel.Enabled = False
        txtM_ID.Enabled = False
        txtP_ID.Enabled = False
        cmdAddList.Enabled = False
    End Sub
    Private Sub ClearAllData()
        lblS_ID.Text = ""
        txtM_ID.Text = ""
        lblMName.Text = ""
        txtP_ID.Text = ""
        lblName.Text = ""
        lblPrice.Text = ""
        txtQty.Text = ""
        lblTotal.Text = ""
        lblNet.Text = "0.00"
        grdOrder.DataSource = Nothing
    End Sub
    Private Function CheckList() As Boolean
        Check = False
        strSQL = "SELECT * FROM Sale_Detail WHERE(S_ID = " & CInt(lblS_ID.Text) & " AND P_ID = '" & txtP_ID.Text & "')"
        da = New OleDbDataAdapter(strSQL, Conn)
        da.Fill(ds, "List")
        If ds.Tables("List").Rows.Count <> 0 Then
            Return True
            ds.Tables("List").Clear()
        Else
            Return False
        End If
    End Function
    Private Function CheckDataAdd() As Boolean
        Check = False
        If lblPrice.Text = "" Or txtQty.Text = "" Or lblTotal.Text = "" Then
            MessageBox.Show("กรุณากรอกข้อมูลให้ครบ   ", "ข้อมูลไม่ครบ", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            Return False
        Else
            Return True
        End If
    End Function
    Private Function CheckDataSave() As Boolean
        Check = False
        If grdOrder.Rows.Count < 1 Then
            MessageBox.Show("กรุณาเลือกสินค้า   ", "ข้อมูลไม่ครบ", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            Return False
        Else
            Return True
        End If
    End Function
    Private Sub FormatGrd()
        With grdOrder
            If .RowCount <> 0 Then
                .Columns(0).HeaderText = "รหัส"
                .Columns(1).HeaderText = "รายการ"
                .Columns(2).HeaderText = "ราคา"
                .Columns(3).HeaderText = "จำนวน"
                .Columns(4).HeaderText = "รวม"
                .Columns(0).Width = 60
                .Columns(1).Width = 180
                .Columns(2).Width = 60
                .Columns(3).Width = 50
                .Columns(4).Width = 80
            End If
        End With
    End Sub
    Private Sub ShowMember()
        If txtM_ID.Text = "" Then
            txtP_ID.Focus()
            Exit Sub
        End If
        strSQL = "SELECT * FROM Member WHERE(M_ID = '" & txtM_ID.Text & "')"
        da = New OleDbDataAdapter(strSQL, Conn)
        If IsFindMember = True Then
            ds.Tables("Member").Clear()
        End If
        da.Fill(ds, "Member")
        If ds.Tables("Member").Rows.Count <> 0 Then
            lblMName.Text = CStr(ds.Tables("Member").Rows(0).Item("Prefix"))
            lblMName.Text &= CStr(ds.Tables("Member").Rows(0).Item("Name"))
            lblMName.Text &= "   "
            lblMName.Text &= CStr(ds.Tables("Member").Rows(0).Item("Surname"))
            txtP_ID.Focus()
            IsFindMember = True
        Else
            MessageBox.Show("ไม่พบรหัสสมาชิกนี้  ", "สมาชิก", MessageBoxButtons.OK, MessageBoxIcon.Exclamation)
            txtM_ID.SelectAll()
            txtM_ID.Focus()
        End If
    End Sub

End Class