How to POST data from ASP.net website to Php (wordpress)

Question

Hi, 

I want to post data (form values ) From my asp.net website to php website. The php website have contact us form, user fill the form and click on submit button to send the form. on successfully submission user get email for confirmation.  I want to do that process from my asp.net website. So that I programatically fill the form and send the request. I write the following code and im getting the response but confirmation email is not working. any help please. 

public string HttpPost(string uri, string parameters)

        {

            // parameters: name1=value1&name2=value2

            WebRequest webRequest = WebRequest.Create(uri);

            webRequest.ContentType = "application/x-www-form-urlencoded";

            webRequest.Method = "POST";

                        

            byte[] bytes = Encoding.ASCII.GetBytes(parameters);

             Stream os = null;

            try

            { // send the Post

                webRequest.ContentLength = bytes.Length;   //Count bytes to send

                os = webRequest.GetRequestStream();

                os.Write(bytes, 0, bytes.Length);         //Send it

            }

            catch (WebException ex)

            {

                lblError.Text = ex.Message + "HttpPost: Request error";

            }

            finally

            {

                if (os != null)

                {

                    os.Close();

                }

            }

            try

            { // get the response

                WebResponse webResponse = webRequest.GetResponse();

                if (webResponse == null)

                { return null; }

                StreamReader sr = new StreamReader(webResponse.GetResponseStream());

                return sr.ReadToEnd().Trim().ToString();

            }

            catch (WebException ex)

            {

                lblError.Text = ex.Message + "HttpPost: Response error";

            }

            return null;

        } // end HttpPost