Imports System.ComponentModel
Imports System.IO.Ports
Imports Microsoft.Office.Core
Imports Excel = Microsoft.Office.Interop.Excel
Public Class frmMySqlTest
    Private Enum basic_info
        'packing info
        packcode
        pack_date
        pack_note
        'order info
        ordercode
        order_name
        phone
        ship_date
        invoice
        order_note
    End Enum
    Private basic_info_max_index As Integer = [Enum].GetNames(GetType(basic_info)).Length - 1
    Private basic_data_select(basic_info_max_index) As String

    Structure item_info
        Dim item_type As String 'P:Product / C:Component
        Dim prod_code As String
        Dim sales_packing_cnt_col_nm As String
        Dim sales_packing_serial_col_nm As String
        Dim cnt As Integer
        Dim serial As String
    End Structure
    Private item_product_list() As item_info
    Private item_component_list() As item_info
    Public item_product_max_index As Integer
    Public item_component_max_index As Integer

    Private cmd As String
    Private dbcmd As String

    Private order_table As String = "jomtOrderDB.jomtOrderTbl"
    Private sales_table As String = "jomtTesterDB.jomtSalesPackingTbl"
    Private order_test As String = "jomtOrderTestDB.jomtTesterOrderTbl"
    Private sales_test As String = "jomtTesterServerDB.jomtSalesPackingTbl"
    Private prod_table As String = "jomtTesterDB.jomtProdList"
    Private component_table As String = "jomtTesterDB.jomtComponentTbl"

    Private order_db As String = order_table
    Private sales_db As String = sales_table
    Private prod_db As String = prod_table
    Private component_db As String = component_table

    Private clear_switch As Boolean = False

    Public InputCnt As Long
    Public InputCntVal As Integer = 10
    Public OldSerialNumberLength As Integer = 12
    Public NewSerialNumberLength As Integer = 16

    Private command_serial As String
    Private command_count As String
    Private product_serial_type As String
    Private all_serial_list As New List(Of String)
    Private query_product As String
    Private query_component As String

    Private Sub SetInputCnt()
        InputCnt = InputCntVal
        timer_barcode.Enabled = True
    End Sub

    Private Sub timer_barcode_Tick(sender As Object, e As EventArgs) Handles timer_barcode.Tick

        If InputCnt Then
            InputCnt -= 1
        Else
            timer_barcode.Enabled = False

            If ckb_barcode.Checked Then

                btnReadDB_Click(sender, e)

            Else
                txbPacking.Focus()
                txbPacking.Refresh()
            End If
        End If

    End Sub

    Private Sub txb_clear()

        If clear_switch = False Then
            txbPacking.Clear()
        End If

        clear_switch = False

        txb_pack_code.Clear()
        txb_pack_date.Clear()
        txb_state_code.Clear()
        txb_state_date.Clear()
        txb_state_name.Clear()
        txb_invoice.Clear()

        txbPacking.Refresh()
        txb_pack_code.Refresh()
        txb_pack_date.Refresh()
        txb_state_code.Refresh()
        txb_state_date.Refresh()
        txb_state_name.Refresh()
        txb_invoice.Refresh()

    End Sub
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        setItemData()
        txb_clear()

        '    DataGridView를 선택하면 전체 한줄이 선택되게 됩니다. 
        dgv_pack_item.SelectionMode = DataGridViewSelectionMode.FullRowSelect
        txbPacking.Focus()
    End Sub

    Private Sub setItemData()
        dbcmd = "SELECT CAST(MAX(ProdCode) AS CHAR) FROM " & prod_table & ";"
        If DBQueryReader(dbcmd) Then
            item_product_max_index = sqlDataQuery(0)
            ReDim item_product_list(item_product_max_index)
        End If

        '제품 ProdCode는 1부터 시작하며, ProSet(1),LuxSet(2)는 같은 컬럼을 사용하고 있어 중복되기 때문에 2부터 조회
        dbcmd = "SELECT CAST(ProdCode AS CHAR), SalesPackingCntColNm, SalesPackingSerialColNm FROM " & prod_table & " WHERE ProdCode > 1 GROUP BY ProdCode ORDER BY ProdCode ASC;"
        If DBQueryReader(dbcmd) Then
            Dim RowCount As Int16 = (sqlDataQuery.Length / 3) - 1
            Dim dataSetCount As Int32 = 0
            Dim item_data As item_info

            For row = 0 To RowCount
                item_data.item_type = "P"
                For col = 0 To 2
                    If col = 0 Then
                        item_data.prod_code = sqlDataQuery(dataSetCount)
                    ElseIf col = 1 Then
                        item_data.sales_packing_cnt_col_nm = sqlDataQuery(dataSetCount)
                    ElseIf col = 2 Then
                        item_data.sales_packing_serial_col_nm = sqlDataQuery(dataSetCount)
                    End If
                    dataSetCount += 1
                Next
                item_product_list(item_data.prod_code) = item_data
            Next
        End If

        dbcmd = "SELECT CAST(MAX(ProdCode) AS CHAR) FROM " & component_table & ";"
        If DBQueryReader(dbcmd) Then
            item_component_max_index = sqlDataQuery(0)
            ReDim item_component_list(item_component_max_index)
        End If

        dbcmd = "SELECT CAST(ProdCode AS CHAR), SalesPackingCntColNm FROM " & component_table & " GROUP BY ProdCode ORDER BY ProdCode asc;"
        If DBQueryReader(dbcmd) Then
            Dim RowCount As Int16 = (sqlDataQuery.Length / 2) - 1
            Dim dataSetCount As Int32 = 0
            Dim item_data As item_info

            For row = 0 To RowCount
                item_data.item_type = "C"
                For col = 0 To 1
                    If col = 0 Then
                        item_data.prod_code = sqlDataQuery(dataSetCount)
                    ElseIf col = 1 Then
                        item_data.sales_packing_cnt_col_nm = sqlDataQuery(dataSetCount)
                    End If
                    dataSetCount += 1
                Next
                item_component_list(item_data.prod_code) = item_data
            Next
        End If

        '제품 정보 조회 쿼리 생성
        query_product = Nothing
        For i = 0 To item_product_max_index
            If item_product_list(i).sales_packing_cnt_col_nm <> Nothing Then
                If query_product = Nothing Then
                    query_product = "IFNULL(" & item_product_list(i).sales_packing_serial_col_nm & ",'NULL'), IFNULL(" & item_product_list(i).sales_packing_cnt_col_nm & ",'0')"
                Else
                    query_product = query_product & ", IFNULL(" & item_product_list(i).sales_packing_serial_col_nm & ",'NULL'), IFNULL(" & item_product_list(i).sales_packing_cnt_col_nm & ",'0')"
                End If
            End If
        Next

        '구성품 정보 조회 쿼리 생성
        query_component = Nothing
        For i = 0 To item_component_max_index
            If item_component_list(i).sales_packing_cnt_col_nm <> Nothing Then
                If query_component = Nothing Then
                    query_component = "IFNULL(" & item_component_list(i).sales_packing_cnt_col_nm & ",'0')"
                Else
                    query_component = query_component & ", IFNULL(" & item_component_list(i).sales_packing_cnt_col_nm & ",'0')"
                End If
            Else
                If query_component = Nothing Then
                    query_component = "'0'"
                Else
                    query_component = query_component & ", '0'"
                End If
            End If
        Next
    End Sub

    Private Sub clearVariable()
        command_serial = Nothing
        command_count = Nothing
        product_serial_type = Nothing
        all_serial_list.Clear()

        clear_switch = True
        txb_clear()
        dgv_pack_item.Rows.Clear()
        dgv_pack_item.Refresh()

        For i = 0 To basic_info_max_index
            basic_data_select(i) = "NULL"
        Next

        For i = 0 To item_product_max_index
            item_product_list(i).cnt = 0
            item_product_list(i).serial = Nothing
        Next

        For i = 0 To item_component_max_index
            item_component_list(i).cnt = 0
        Next
    End Sub

    Private Function select_packingCode(serial As String) As String
        Dim modelNum As String = Mid(serial, 1, 1)
        Dim typeNum As String = Mid(serial, 2, 1)

        If serial.Length = OldSerialNumberLength Then
            modelNum = Mid(serial, 1, 1)
            typeNum = Mid(serial, 2, 1)
        Else
            modelNum = Mid(serial, 1, 2)
            typeNum = Mid(serial, 15, 1)
        End If

        dbcmd = "SELECT SalesPackingSerialColNm, SalesPackingCntColNm, CAST(ProdCode AS CHAR) FROM " & prod_table & " WHERE ModelNum = " & modelNum & " AND TypeNum = " & typeNum & " LIMIT 1;"
        If DBQueryReader(dbcmd) Then
            command_serial = sqlDataQuery(0)
            command_count = sqlDataQuery(1)
            product_serial_type = sqlDataQuery(2)

            dbcmd = "SELECT PackingCode FROM " & sales_table & " WHERE " & command_serial & " LIKE '%" & serial & "%'"
            If DBQueryReader(dbcmd) Then
                Return sqlDataQuery(0)
            End If
        End If

        Return Nothing
    End Function


    Private Sub btnReadDB_Click(sender As Object, e As EventArgs) Handles btnReadDB.Click

        If txbPacking.Text = "" Then

            If ckb_state.Checked = True Then
                MsgBox("전표코드를 입력하여 주십시오.", vbExclamation)
            Else
                MsgBox("패킹코드를 입력하여 주십시오.", vbExclamation)
            End If

        Else

            Dim packing_code As String = txbPacking.Text

            clearVariable()

            '시리얼번호를 포함하고 있는 패킹코드 검색
            If Len(txbPacking.Text) = OldSerialNumberLength Or Len(txbPacking.Text) = NewSerialNumberLength Then
                packing_code = select_packingCode(txbPacking.Text)
            End If

            If packing_code <> Nothing And db_select(packing_code) Then
                If item_out() Then
                    txb_pack_code.Text = basic_data_select(basic_info.packcode)
                    txb_pack_date.Text = basic_data_select(basic_info.pack_date)
                    txb_state_code.Text = basic_data_select(basic_info.ordercode)
                    txb_state_date.Text = basic_data_select(basic_info.ship_date)
                    txb_state_name.Text = basic_data_select(basic_info.order_name)
                    txb_invoice.Text = basic_data_select(basic_info.invoice)
                End If

                If all_serial_list.Count > 1 Then
                    MsgBox(txbPacking.Text & " 는 패킹코드 " & packing_code & "에 포함된 시리얼번호입니다")
                End If
            Else
                txbPacking.BackColor = Color.Red
                MsgBox("등록되지 않은 데이터 입니다. 패킹 코드를 확인하여 주십시오.", vbCritical)
            End If

        End If

        txbPacking.Focus()
    End Sub

    Private Function db_select(packing_code As String) As Boolean
        '패킹, 주문 기본정보 조회
        dbcmd = "SELECT IFNULL(sale.PackingCode,'NULL')
                      , IFNULL(sale.`Data`,'NULL')
                      , IFNULL(sale.note, '')
                      , IFNULL(otb.Order_Code,'NULL')
                      , IFNULL(otb.Orderer_Name,'NULL')
                      , IFNULL(otb.Phone_Number,'NULL')
                      , IFNULL(otb.Shipment_Date,'NULL')
                      , IFNULL(otb.Invoice_Number,'NULL')
                      , IFNULL(otb.note,'')
                  FROM " & sales_db & " AS sale LEFT JOIN " & order_db & " AS otb ON sale.PackingCode = otb.Packing_Code 
                 WHERE sale.PackingCode = '" & packing_code & "' GROUP BY sale.PackingCode"

        If DBQueryReader(dbcmd) Then
            For i = 0 To basic_info_max_index
                basic_data_select(i) = sqlDataQuery(i)
            Next
        Else
            Return False
        End If

        '제품 정보 조회
        dbcmd = "SELECT " & query_product & " FROM " & sales_db & " WHERE PackingCode = '" & packing_code & "'"
        If DBQueryReader(dbcmd) Then
            Dim RowCount As Int16 = (sqlDataQuery.Length / 2)
            Dim dataSetCount As Int32 = 0

            For row = 2 To RowCount  '제품 ProdCode는 1부터 시작하며, ProSet(1),LuxSet(2)는 같은 컬럼을 사용하고 있어 중복되기 때문에 ProdCode 2부터 설정
                For col = 0 To 1
                    If col = 0 Then
                        item_product_list(row).serial = sqlDataQuery(dataSetCount)
                    ElseIf col = 1 Then
                        item_product_list(row).cnt = sqlDataQuery(dataSetCount)
                    End If
                    dataSetCount += 1
                Next

                '모든 제품의 시리얼번호를 검색
                If item_product_list(row).serial <> "NULL" Then
                    Dim serial_array() As String = item_product_list(row).serial.Split("/")
                    For j = 0 To serial_array.Length - 1
                        If Len(serial_array(j)) <> 0 Then
                            all_serial_list.Add(serial_array(j))
                        End If
                    Next
                End If
            Next
        End If

        '구성품 정보 조회
        dbcmd = "SELECT " & query_component & " FROM " & sales_db & " WHERE PackingCode = '" & packing_code & "'"
        If DBQueryReader(dbcmd) Then
            For i = 0 To sqlDataQuery.Length - 1
                item_component_list(i).cnt = sqlDataQuery(i)
            Next
        End If

        Return True
    End Function

    Private Function item_out() As Boolean
        Dim item_name As String
        Dim dgv_switch As Boolean

        Try
            For i = 0 To item_product_max_index
                dgv_switch = False
                item_name = Nothing

                If item_product_list(i).cnt > 0 Then
                    If i = 1 Or i = 2 Then    'Pro_Set, Lux_Set
                        If Mid(item_product_list(i).serial, 1, 2) = "10" Then
                            item_name = "DUALSONIC Pro 1Set (KR)"
                        Else
                            item_name = "DUALSONIC Lux 1Set (KR)"
                        End If
                    Else
                        dbcmd = "SELECT ItemName FROM " & prod_db & " WHERE ProdCode = '" & i & "' AND ItemName NOT LIKE '%체험%' LIMIT 1"
                        If DBQueryReader(dbcmd) Then
                            item_name = sqlDataQuery(0)
                        End If
                    End If

                    dgv_switch = True
                End If

                If dgv_switch = True Then
                    dgv_pack_item.Rows.Add(item_name, item_product_list(i).cnt, item_product_list(i).serial)
                End If
            Next

            For i = 0 To item_component_max_index
                dgv_switch = False
                item_name = Nothing

                If item_component_list(i).cnt > 0 Then
                    dbcmd = "SELECT ItemName FROM " & component_db & " WHERE ProdCode = '" & i & "' LIMIT 1"

                    If DBQueryReader(dbcmd) Then
                        item_name = sqlDataQuery(0)
                    End If

                    dgv_switch = True
                End If

                If dgv_switch = True Then
                    dgv_pack_item.Rows.Add(item_name, item_component_list(i).cnt, item_component_list(i).serial)
                End If
            Next

            Return True

        Catch ex As Exception
            MsgBox(Err.Description, vbCritical)
            Return False
        End Try

    End Function

    Private Sub txbPacking_Click(sender As Object, e As EventArgs) Handles txbPacking.Click
        txbPacking.Text = ""
        txbPacking.BackColor = Color.White
    End Sub

    Private Sub txbPacking_KeyDown(ByVal sender As Object, e As KeyEventArgs) Handles txbPacking.KeyDown
        If e.KeyCode = Keys.Return Then
            btnReadDB_Click(sender, EventArgs.Empty)
        End If
    End Sub

    Private Sub delete_packingCode()
        Dim msg_cnt As Int16
        Dim serial_data As String

        msg_cnt = MsgBox("해당 패킹 및 전표 데이터를 삭제하시겠습니까?", vbExclamation + vbOKCancel)
        If msg_cnt = 1 Then

            serial_data = delete_sales()

            If txb_pack_code.Text <> "NULL" Then
                If pack_delete(serial_data) Then

                    If txb_state_code.Text <> "NULL" Then

                        If state_delete(serial_data) Then
                            txbPacking.BackColor = Color.Green
                            clear_switch = True
                            txb_clear()
                            dgv_pack_item.Rows.Clear()
                            MsgBox("데이터 삭제가 완료되었습니다.", vbInformation)
                        Else
                            txbPacking.BackColor = Color.Red
                            MsgBox("데이터베이스 안에 전표 데이터가 존재하지 않습니다. 데이터를 확인하여 주십시오.", vbCritical)
                        End If

                    Else
                        txbPacking.BackColor = Color.Green
                        clear_switch = True
                        txb_clear()
                        dgv_pack_item.Rows.Clear()
                        MsgBox("데이터 삭제가 완료되었습니다.", vbInformation)

                    End If

                Else
                    txbPacking.BackColor = Color.Red
                    MsgBox("데이터베이스 안에 패킹 데이터가 존재하지 않습니다. 데이터를 확인하여 주십시오.", vbCritical)
                End If
            End If

        Else
            MsgBox("삭제가 취소되었습니다.", vbInformation)
        End If

    End Sub

    Private Sub delete_serial()
        Dim msg_cnt As Int16

        msg_cnt = MsgBox("패킹에 포함된 시리얼번호를 삭제하시겠습니까?", vbExclamation + vbOKCancel)
        If msg_cnt = 1 Then
            'STEP_01 : jomtTesterDB.jomtSalesPackingTbl 테이블 시리얼번호 삭제
            Dim remain_serial_data() As String = item_product_list(product_serial_type).serial.Replace(txbPacking.Text, "").Split("/")
            Dim update_serial_str As String = ""
            Dim update_serial_cnt As UInt16 = 0
            Dim update_note_str As String = basic_data_select(basic_info.pack_note)

            For i = 0 To remain_serial_data.Length - 1
                If Len(remain_serial_data(i)) <> 0 Then
                    If update_serial_str = "" Then
                        update_serial_str = remain_serial_data(i)
                    Else
                        update_serial_str = update_serial_str & "/" & remain_serial_data(i)
                    End If

                    update_serial_cnt += 1
                End If
            Next

            If Len(update_note_str) = 0 Then
                update_note_str = txbPacking.Text
            Else
                update_note_str = update_note_str & "," & txbPacking.Text
            End If

            dbcmd = "UPDATE " & sales_db &
                      " SET " & command_serial & " = '" & update_serial_str & "'" &
                         ", " & command_count & " = " & update_serial_cnt &
                         ", note  = '" & update_note_str & "'" &
                    " WHERE PackingCode = '" & txb_pack_code.Text & "'"

            If DBCommand(dbcmd) Then

                'STEP_02 : jomtOrderDB.jomtOrderTbl 테이블 시리얼번호 삭제
                If txb_state_code.Text <> "NULL" Then

                    dbcmd = "SELECT IFNULL(Serial_Number, '') FROM " & order_db &
                            " WHERE Order_Code = '" & txb_state_code.Text & "' AND Serial_Number LIKE '%" & txbPacking.Text & "%'"

                    If DBQueryReader(dbcmd) Then
                        remain_serial_data = sqlDataQuery(0).Replace(txbPacking.Text, "").Split("/")
                        update_serial_str = ""
                        update_serial_cnt = 0
                        update_note_str = basic_data_select(basic_info.order_note)

                        For i = 0 To remain_serial_data.Length - 1
                            If Len(remain_serial_data(i)) <> 0 Then
                                If update_serial_str = "" Then
                                    update_serial_str = remain_serial_data(i)
                                Else
                                    update_serial_str = update_serial_str & "/" & remain_serial_data(i)
                                End If

                                update_serial_cnt += 1
                            End If
                        Next

                        If Len(update_note_str) = 0 Then
                            update_note_str = txbPacking.Text
                        Else
                            update_note_str = update_note_str & "," & txbPacking.Text
                        End If

                        'STEP_02-1 : jomtOrderDB.jomtOrderTbl 테이블 시리얼번호, 개수 업데이트
                        dbcmd = "UPDATE " & order_db &
                                  " SET Serial_Number = '" & update_serial_str & "'" &
                                     ", Item_Count = " & update_serial_cnt &
                                " WHERE Order_Code = '" & txb_state_code.Text & "' AND Serial_Number LIKE '%" & txbPacking.Text & "%'"

                        If DBCommand(dbcmd) Then

                            'STEP_02-2 : jomtOrderDB.jomtOrderTbl 테이블 note에 삭제된 시리얼번호 업데이트
                            dbcmd = "UPDATE " & order_db &
                                      " SET note = '" & update_note_str & "'" &
                                    " WHERE Order_Code = '" & txb_state_code.Text & "'"

                            If DBCommand(dbcmd) = False Then
                                txbPacking.BackColor = Color.Red
                                MsgBox("Order 테이블 시리얼번호 삭제(2) 중 오류가 발생하였습니다.", vbCritical)
                                Exit Sub
                            End If
                        Else
                            txbPacking.BackColor = Color.Red
                            MsgBox("Order 테이블 시리얼번호 삭제(1) 중 오류가 발생하였습니다.", vbCritical)
                            Exit Sub
                        End If
                    End If
                End If

            Else
                txbPacking.BackColor = Color.Red
                MsgBox("SalesPacking 테이블 시리얼번호 삭제 중 오류가 발생하였습니다.", vbCritical)
                Exit Sub
            End If

            '삭제하는 시리얼번호가 패킹코드이면 패킹코드를 다시 설정
            If txbPacking.Text = txb_pack_code.Text Then
                all_serial_list.Remove(txbPacking.Text)
                all_serial_list.Sort()

                dbcmd = "UPDATE " & sales_db &
                          " SET PackingCode  = '" & all_serial_list(0) & "'" &
                        " WHERE PackingCode = '" & txb_pack_code.Text & "'"

                If DBCommand(dbcmd) Then
                    dbcmd = "UPDATE " & order_db &
                              " SET Packing_Code = '" & all_serial_list(0) & "'" &
                            " WHERE Order_Code = '" & txb_state_code.Text & "' AND Packing_Code = '" & txb_pack_code.Text & "'"

                    If DBCommand(dbcmd) = False Then
                        txbPacking.BackColor = Color.Red
                        MsgBox("Order 테이블 패킹코드 업데이트에 오류가 발생하였습니다.", vbCritical)
                        Exit Sub
                    End If

                Else
                    txbPacking.BackColor = Color.Red
                    MsgBox("SalesPacking 테이블 패킹코드 업데이트에 오류가 발생하였습니다.", vbCritical)
                    Exit Sub
                End If

            End If

            txbPacking.BackColor = Color.Green
            clear_switch = True
            txb_clear()
            dgv_pack_item.Rows.Clear()
            MsgBox("데이터 삭제가 완료되었습니다.", vbInformation)

        End If

    End Sub

    Private Sub btn_delete_Click(sender As Object, e As EventArgs) Handles btn_delete.Click
        Dim msg_cnt As Int16
        Dim serial_data As String

        If dgv_pack_item.Rows.Count <> 1 Then

            If ckb_state.Checked = True Then

                msg_cnt = MsgBox("해당 패킹 번호의 전표 데이터만 삭제하시겠습니까?", vbExclamation + vbOKCancel)

                If msg_cnt = 1 Then

                    serial_data = delete_sales()

                    If txb_state_code.Text <> "NULL" Then

                        If state_delete(serial_data) Then
                            txbPacking.BackColor = Color.Green
                            clear_switch = True
                            txb_clear()
                            dgv_pack_item.Rows.Clear()
                            MsgBox("데이터 삭제가 완료되었습니다.", vbInformation)
                        Else
                            txbPacking.BackColor = Color.Red
                            MsgBox("데이터베이스 안에 전표 데이터가 존재하지 않습니다. 데이터를 확인하여 주십시오.", vbCritical)
                        End If

                    Else
                        txbPacking.BackColor = Color.Red
                        MsgBox("데이터베이스 안에 전표 데이터가 존재하지 않습니다. 데이터를 확인하여 주십시오.", vbCritical)

                    End If
                Else
                    MsgBox("삭제가 취소되었습니다.", vbInformation)
                End If
            Else

                If all_serial_list.Count > 1 Then
                    delete_serial()
                Else
                    delete_packingCode()
                End If

            End If

        Else
            txbPacking.BackColor = Color.Red
            MsgBox("삭제할 데이터가 존재하지 않습니다.", vbExclamation)
        End If

        txbPacking.Focus()

    End Sub

    Private Function state_delete(serial As String) As Boolean

        If txb_invoice.Text <> "NULL" Then
            serial = txb_invoice.Text & "," & serial
        End If

        dbcmd = "UPDATE " & order_db & " SET Invoice_Number = NULL, Packing_Code = NULL, Serial_Number = NULL, Buy_Type = NULL, release_state = NULL, note = '" & serial & "' WHERE Order_Code = '" & txb_state_code.Text & "'"

        If DBCommand(dbcmd) Then
            Return True

        End If

        Return False

    End Function

    Private Function pack_delete(serial As String) As Boolean

        dbcmd = "UPDATE " & sales_db &
                  " SET PackingCode = 'null_" & txb_pack_code.Text & "'
                      , " & command_serial & " = NULL
                      , note = '" & serial & "' 
                  WHERE PackingCode = '" & txb_pack_code.Text & "'"
        If DBCommand(dbcmd) Then
            Return True
        End If

        Return False

    End Function

    Private Function delete_sales() As String
        Dim serial_data As String = ""

        For i = 0 To dgv_pack_item.Rows.Count - 2
            If dgv_pack_item.Rows(i).Cells(2).Value IsNot Nothing AndAlso dgv_pack_item.Rows(i).Cells(2).Value.ToString() <> "" Then
                If serial_data = "" Then
                    serial_data = dgv_pack_item.Rows(i).Cells(2).Value
                Else
                    serial_data = serial_data & "," & dgv_pack_item.Rows(i).Cells(2).Value
                End If
            End If
        Next

        If Len(basic_data_select(basic_info.pack_note)) > 0 Then
            serial_data = basic_data_select(basic_info.pack_note) & "," & serial_data
        End If

        Return serial_data

    End Function

    Private Sub txbPacking_TextChanged(sender As Object, e As EventArgs) Handles txbPacking.TextChanged
        Dim tmpStr As String

        If InputCnt = 0 And ckb_barcode.Checked = True Then
            tmpStr = txbPacking.Text
            If (Len(tmpStr) > 1) Then
                tmpStr = Mid(tmpStr, Len(tmpStr), 1)
                txbPacking.Clear()
                txbPacking.AppendText(tmpStr)
            End If
            SetInputCnt()
        End If
    End Sub

    Private Sub txb_pack_code_Click(sender As Object, e As EventArgs) Handles txb_pack_code.Click, txb_invoice.Click, txb_pack_date.Click, txb_state_code.Click, txb_state_date.Click, txb_state_name.Click, dgv_pack_item.Click, ckb_state.CheckedChanged, ckb_barcode.CheckedChanged
        txbPacking.Focus()
    End Sub
End Class