[VB.NET] المكان المناسب لي هذا الكود

كود :
Private Function GetToken(ByVal User As String, ByVal pass As String) As String

    Dim result As String



    Try

        Dim str As String = "https://api.facebook.com/restserver.php"

        Dim str2 As String = "62f8ce9f74b12f84c123cc23437a4a32"

        Dim dictionary As Dictionary(Of String, String) = New Dictionary(Of String, String)()

        dictionary.Add("api_key", "882a8490361da98702bf97a021ddc14d")

        dictionary.Add("credentials_type", "password")

        dictionary.Add("email", User)

        dictionary.Add("format", "JSON")

        dictionary.Add("generate_machine_id", "1")

        dictionary.Add("generate_session_cookies", "1")

        dictionary.Add("locale", "en_CA")

        dictionary.Add("method", "auth.login")

        dictionary.Add("password", pass)

        dictionary.Add("return_ssl_resources", "0")

        dictionary.Add("v", "1.0")

        Dim text As String = String.Empty



        For Each keyValuePair As KeyValuePair(Of String, String) In dictionary

            text = text & keyValuePair.Key & "=" + keyValuePair.Value

        Next



        text += str2

        text = Form1.PHPMd5Hash(text).ToLower()

        dictionary.Add("sig", text)

        Dim url As String = str & "?" & QueryStringBuilder.BuildQueryString(dictionary, "&")

        result = CStr(JObject.Parse(Me.[GET](url))("access_token"))

    Catch

        result = Nothing

    End Try



    Return result

End Function