ขออนุญาติสอบถามเรื่อง insert into excel เข้า database sql server หน่อยครับ

Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.OleDb
Imports Excel
Partial Class WebSpecProduct_frmspecProduct
    Inherits System.Web.UI.Page
    'Dim dt As New DataTable
    Dim xlApp As New Excel.Application
    Protected Sub btnUpload_Click(sender As Object, e As EventArgs) Handles btnUpload.Click
        If Not IsNothing(myFile1.PostedFile) Then
            Dim UlFileName As String
            Dim i As Integer
            UlFileName = "MyXls/ProductSpecification.xls" & 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("CustomerID")
            dt.Columns.Add("EmployeeName")
            dt.Columns.Add("Designation")
            dt.Columns.Add("Posting")
            dt.Columns.Add("Dept")
            i = 2
            Do While Not Trim(xlSheet1.Cells.Item(i, 1).Value) = ""
                '*** Rows ***'
                dr = dt.NewRow
                dr("CustomerID") = xlSheet1.Cells.Item(i, 1).Value
                dr("EmployeeName") = xlSheet1.Cells.Item(i, 2).Value
                dr("Designation") = xlSheet1.Cells.Item(i, 3).Value
                dr("Posting") = xlSheet1.Cells.Item(i, 4).Value
                dr("Dept") = xlSheet1.Cells.Item(i, 5).Value
                dt.Rows.Add(dr)
                i = i + 1
            Loop

            '*** End DataTable ***'

            '*** Insert to Database ***'
            Dim objConn As OleDbConnection
            Dim objCmd As OleDbCommand
            Dim strConnString As String
            Dim strSQL As String
            strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("database/dbSpecProduct.mdb") & ";"
            objConn = New OleDbConnection(strConnString)
            objConn.Open()

            For i = 0 To dt.Rows.Count - 1                  '*** Insert Record ***'
                strSQL = "INSERT INTO Employee (CustomerID,EmployeeName,Designation,Posting,Dept) " &
                    " VALUES ('" & dt.Rows(i)("CustomerID") & "','" & dt.Rows(i)("EmployeeName") & "' " &
                    ",'" & dt.Rows(i)("Designation") & "','" & dt.Rows(i)("Posting") & "' " &
                    ",'" & dt.Rows(i)("Dept") & "') "
                objCmd = New OleDbCommand(strSQL, objConn)

            Next

            Me.lblText.Text = "Record Inserted."

            '*** Quit And Clear Object ***'
            'objConn.Close()
            'objConn = Nothing

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