รบกวนช่วยดู Code Insert and Update นี้ให้หน่อยครับคือข้อมูล Update ให้ครับ แต่ไม่ Insert ให้

  Protected Sub btnAdd_Click(sender As Object, e As EventArgs) Handles btnAdd.Click

        If Not IsNothing(myFile1.PostedFile) Then

            Dim UlFileName As String
            Dim i As Integer

            UlFileName = "MyXls/" & System.IO.Path.GetFileName(myFile1.ToString)

            '*** Save Images ***'
            myFile1.PostedFile.SaveAs(Server.MapPath(UlFileName))

            '*** Create Excel.Application ***'
            Dim xlApp As New Excel.Application
            Dim xlBook As Excel.Workbook
            Dim xlSheet1 As Excel.Worksheet

            xlBook = xlApp.Workbooks.Open(Server.MapPath(UlFileName))
            xlBook.Application.Visible = False

            xlSheet1 = xlBook.Worksheets(1)

            '*** Create DataTable ***'
            Dim dt As New System.Data.DataTable
            Dim dr As System.Data.DataRow

            '*** Column ***'
            dt.Columns.Add("ProductID")
            dt.Columns.Add("PartName")
            i = 2
            Do While Not Trim(xlSheet1.Cells.Item(i, 1).Value) = ""
                '*** Rows ***'
                dr = dt.NewRow
                dr("ProductID") = xlSheet1.Cells.Item(i, 1).Value
                dr("PartName") = xlSheet1.Cells.Item(i, 2).Value

                dt.Rows.Add(dr)
                i = i + 1
            Loop

            '*** End DataTable ***'

            ''*** Insert to Database ***'
            objConn = New SqlConnection
            With objConn
                .ConnectionString = strConn
                If objConn.State = ConnectionState.Closed Then
                    .Open()
                End If
            End With
            Try
                sqlTmp = "SELECT Count(*) From TbSpecproductest Where ProductID = '" & dt.Rows(0)("ProductID") & "'"
                'DA = New SqlDataAdapter(sqlTmp, objConn)
                'DS = New DataSet
                'DA.Fill(DS, "TABLE")
                objConn = New SqlConnection

                With objConn
                    .ConnectionString = strConn
                    If objConn.State = ConnectionState.Closed Then
                        .Open()
                    End If
                End With
                objCmd = New SqlCommand
                With objCmd
                    .Connection = objConn
                    .CommandType = CommandType.Text
                    .CommandText = sqlTmp
                End With
                objCmd.ExecuteScalar()

                If objCmd.ExecuteScalar > 0 Then
                    For i = 0 To dt.Rows.Count - 1
                        sqlTmp = "Update TbSpecproductest Set partname = '" & dt.Rows(i)("Partname") & "' "
                        sqlTmp &= "Where ProductID = '" & dt.Rows(i)("ProductID") & "'"
                        objCmd = New SqlCommand
                        With objCmd
                            .Connection = objConn
                            .CommandType = CommandType.Text
                            .CommandText = sqlTmp
                        End With
                        objCmd.ExecuteNonQuery()
                    Next
                Else
                    For i = 0 To dt.Rows.Count - 1
                        sqlTmp = "INSERT INTO TbSpecproductest (ProductID,PartName)"
                        sqlTmp &= "Values ('" & dt.Rows(i)("ProductID") & "','" & dt.Rows(i)("PartName") & "')"
                        objCmd = New SqlCommand
                        With objCmd
                            .Connection = objConn
                            .CommandType = CommandType.Text
                            .CommandText = sqlTmp
                        End With
                        objCmd.ExecuteNonQuery()
                    Next
                End If





            Catch ex As Exception

            End Try


            xlApp.Application.Quit()
            xlApp.Quit()
            xlSheet1 = Nothing
            xlBook = Nothing
            xlApp = Nothing
        End If

    End Sub