Get following exception : Unhandled Exception: System.Net.WebException: The remote server returned an error: (415) Unsupported Media Type.

Question

I get following error

Unhandled Exception: System.Net.WebException: The remote server returned an erro
r: (415) Unsupported Media Type.
   at System.Net.HttpWebRequest.GetResponse()

This is my program. I am making POST to the freely available webservice http://www.webservicex.net/ConvertTemperature.asmx?op=ConvertTemp.    Please can you point me what is the error?

namespace testwebservice
{
    class Program
    {
        static void Main(string[] args)
        {

            Console.WriteLine("Calling web method ConvertTemp() using HTTP");
            string postdata = "Temperature=100&FromUnit=degreeCelsius&ToUnit=degreeFahrenheit";
            byte[] buffer = Encoding.ASCII.GetBytes(postdata);
            string url = "http://www.webservicex.net/ConvertTemperature.asmx?op=ConvertTemp";
            
            HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
            req.Method = "POST";
            req.ContentType = "application/x-www-form-urlencoded";
            req.ContentLength = buffer.Length;
            req.Headers.Add("SOAPAction:\"http://www.webserviceX.NET/ConvertTemp\"");
            req.Timeout = 5000;
            Stream reqst = req.GetRequestStream();
            reqst.Write(buffer, 0, buffer.Length);
            reqst.Flush();
            reqst.Close();
            

            HttpWebResponse res = (HttpWebResponse)req.GetResponse();
            Stream resst = res.GetResponseStream();
            StreamReader sr = new StreamReader(resst);

            Console.WriteLine("Http response is: ");
            Console.WriteLine(sr.ReadToEnd());
            sr.Close();
            resst.Close();
            
            Console.WriteLine("done");
        }
    }
}

Answer 1

Why don't you just add a service reference to the service, and call it that way? Why play with HttpWebRequest?

---

John Saunders
WCF is Web Services. They are not two separate things.
Use WCF for All New Web Service Development, instead of legacy ASMX or obsolete WSE
Use File->New Project to create Web Service Projects

Answer 2

Please can you send me link to the article that you are mentioning so i can understand how to use it?

Answer 3

I wasn't mentioning an article. If you need one, try "How to Consume a Web Service".

---

John Saunders
WCF is Web Services. They are not two separate things.
Use WCF for All New Web Service Development, instead of legacy ASMX or obsolete WSE
Use File->New Project to create Web Service Projects