REST POST to WCF Service - rest

Question

I'm trying to post to WCF service. I get this error
"You must write ContentLength bytes to the request stream before calling [Begin]GetResponse."
Code:
ASCIIEncoding encoding = new ASCIIEncoding();
string postData = "patron=WTM";
byte[] data = encoding.GetBytes(postData);
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:8733/FileShareWebServices/UploadFile");
httpWebRequest.ContentType = "application/json; charset=utf-8";
httpWebRequest.Method = "POST";
httpWebRequest.ContentLength = data.Length;
httpWebRequest.GetRequestStream();
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
}

Answer 1

Your posted code doesn't write anything to the request stream which is most likely the cause of the error. Once you get the request stream you should write to it the contents and the length, like this:
using (Stream requestStream = httpWebRequest.GetRequestStream)
{
requestStream.Write(data, 0, data.Length);
}
The complete code would look like this:
ASCIIEncoding encoding = new ASCIIEncoding();
string postData = "patron=WTM";
byte[] data = encoding.GetBytes(postData);
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://localhost:8733/FileShareWebServices/UploadFile");
httpWebRequest.ContentType = "application/json; charset=utf-8";
httpWebRequest.Method = "POST";
httpWebRequest.ContentLength = data.Length;
//httpWebRequest.GetRequestStream();
// Code to write data to the stream
using (Stream requestStream = httpWebRequest.GetRequestStream)
{
requestStream.Write(data, 0, data.Length);
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var result = streamReader.ReadToEnd();
}