Hello, I am having a very difficult time trying to upload files to a database. I have read tutorials on this and I have copied and pasted codes from one of them in my aspx page. The code is as follows:

Public Class Upload
    Inherits System.Web.UI.Page
    Protected WithEvents File As System.Web.UI.HtmlControls.HtmlInputFile


 If FileUpload.PostedFile Is Nothing OrElse String.IsNullOrEmpty(FileUpload.PostedFile.FileNam e) OrElse FileUpload.PostedFile.InputStream Is Nothing Then
    ... Show error message ...
    Exit Sub
  End If

  'Make sure we are dealing with a JPG or GIF file
  Dim extension As String = Path.GetExtension(FileUpload.PostedFile.FileName). ToLower()
  Dim MIMEType As String = Nothing

  Select Case extension
    Case ".gif"
      MIMEType = "image/gif"
    Case ".jpg", ".jpeg", ".jpe"
      MIMEType = "image/jpeg"
    Case ".png"
      MIMEType = "image/png"

    Case Else
      'Invalid file type uploaded
      ... Show error message ...
      Exit Sub
  End Select


  'Connect to the database and insert a new record into Products
  Using myConnection As New SqlConnection(ConfigurationManager.ConnectionStrin gs("ImageGalleryConnectionString").ConnectionStrin g)

    Const SQL As String = "INSERT INTO [Pictures] ([Title], [MIMEType], [ImageData]) VALUES (@Title, @MIMEType, @ImageData)"
    Dim myCommand As New SqlCommand(SQL, myConnection)
    myCommand.Parameters.AddWithValue("@Title", PictureTitle.Text.Trim())
    myCommand.Parameters.AddWithValue("@MIMEType", MIMEType)

    'Load FileUpload's InputStream into Byte array
    Dim imageBytes(FileUpload.PostedFile.InputStream.Lengt h) As Byte
    FileUpload.PostedFile.InputStream.Read(imageBytes, 0, imageBytes.Length)
    myCommand.Parameters.AddWithValue("@ImageData", imageBytes)

    myConnection.Open()
    myCommand.ExecuteNonQuery()
    myConnection.Close()
  End Using
End Sub

when I tried to build the solution it says that "PostedFile is not a member of System.Web.UI.WebControl.Button". Also "...Show error ..." caused an error which says "Identifier expected". It also said "Path" is not declared. I don't know what namespace to include in order to make this application work. Thank you in advance for you help.