language translation using Bing API

protected void Button1_Click(object sender, EventArgs e)

  {

                // Bing ApI Key

            string applicationid = "68D088969D79A8B23AF8585CC83EBA2A05A97651";           

            string fromlanguage = "en";  // From language

            string translatedText = "";

            string texttotranslate = txtFrom.Text; // Text to translate

            string tolanguage = "hi";//To language?

           

            //preparing url with all four parameter

            string uri = "http://api.microsofttranslator.com/v2/Http.svc/Translate?appId=" + applicationid

                       + "&text=" + texttotranslate + "&from=" + fromlanguage + "&to=" + tolanguage;           

            //making web request to url

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);

            //getting response from api

            WebResponse response = request.GetResponse();

            Stream strm = response.GetResponseStream();

            StreamReader reader = new System.IO.StreamReader(strm);

            //reading result

            translatedText = reader.ReadToEnd();           

            dvTo.InnerHtml = translatedText;           

            response.Close();           

   }

    <div>

        <asp:TextBox ID="txtFrom" runat="server" TextMode="MultiLine" Height="88px"   

Width="235px"></asp:TextBox>

        <br />

        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />

        <div id="dvTo" runat="server" > </div>

    </div>