Compiler Error Message: BC30451: 'gl' is not declared. It may be inaccessible due to its protection level.

Source Error:



Line 18: 
Line 19:     Private Sub LeggiImmagineCampoBlob()
Line 20:         Using con As New OleDbConnection(gl.StringaConnessioneTest)
Line 21:             con.Open()
Line 22:             Dim sql As String = "select immagine from Tabella1 where [id] = 0"

Dim objconn As new OleDbConnection   ("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & server.MapPath("immagini.mdb"))

Private Sub prove_a_Load(sender As Object, e As EventArgs) Handles Me.Load



       Dim p_img As String = Trim(System.Web.HttpContext.Current.Request.QueryString("p_img"))
        If p_img = "l" Then
            LeggiImmagineCampoBlob()
        End If

    End Sub

    Private Sub LeggiImmagineCampoBlob()
  
  

        Using con As New OleDbConnection(gl.objconn)
            con.Open()
            Dim sql As String = "select immagine from Tabella1 where [id] = 0"
            Dim command As New OleDbCommand(sql, con)
            Dim buffer As Byte() = CType(command.ExecuteScalar(), Byte())

            If buffer IsNot Nothing Then
                Response.Clear()
                Response.ClearContent()
                Response.AddHeader("Content-Length", buffer.Length.ToString)
                If buffer.Length > 0 Then
                    Response.BinaryWrite(buffer)
                End If

                Response.Flush() : Response.End()

            End If

        End Using

    End Sub

Server Error in '/' Application.

Compilation Error 
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: BC30451: 'gl' is not declared. It may be inaccessible due to its protection level.

Source Error:



Line 23:   
Line 24: 
Line 25:         Using con As New OleDbConnection(gl.objconn)
Line 26:             con.Open()
Line 27:             Dim sql As String = "select immagine from Tabella1 where [id] = 0"