PHP - variable global

Public Sub seleccionaOpcion(idTexto As String, textoConfirmacion As String)

    Dim connString2 As String = "server=;Port=; user id=; password=; database="

    Dim sqlConn2 As New MySqlConnection(connString2)

    Dim sqlQuery1 As String = "SELECT etiqueta,id,cont,cliente,capacidad,sacar FROM privado"

    Using sqlConn2

        Using sqlComm As New MySqlCommand()

            With sqlComm

                .Connection = sqlConn2

                .CommandText = sqlQuery1

                .CommandType = CommandType.Text

            End With

            Try

                sqlConn2.Open()

                Dim sqlReader As MySqlDataReader = sqlComm.ExecuteReader()

                Dim contsacar = 0

                While sqlReader.Read()

                    Dim cont = sqlReader("cont").ToString()

                    Dim capacidad = sqlReader("capacidad").ToString()

                    Dim cliente = sqlReader("cliente").ToString()

                    Dim sacar = sqlReader("sacar").ToString()

                    If sacar = "si" Then

                        contsacar = Val(contsacar) + 1

                    End If

                End While

                sqlConn2.Close()

            Catch ex As MySqlException

                MessageBox.Show(ex.Message)

            End Try

        End Using

    End Using