How to send HTTP POST request to server in C#?

Below example shows how to send HTTP POST request to the web server in C#.Net

            String server= "http://www.ezybus.in";

            //create http web request.
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(server);

            //if you use proxy server to connect  to the site, you will have to provide the server details and //authentication information.
            WebProxy myproxy = new WebProxy("proxy_server:8080", true);
            myproxy.Credentials = new NetworkCredential("userID", "Password");
            request.Proxy = myproxy;

            try
            {

                //3 things to send to server are - CookieContainer, PostData, ContentType

                request.Method = "POST";
             
                 String postData = "UserId=abc&UserPassword=bxnbs&enter=";
         
                 //encode post data
                 postData  = System.Web.HttpUtility.UrlEncode(postData);
             
                //here previousCookieContainer is the CookieContainer object that was used for the GET request
                request.CookieContainer = previousCookieContainer;
             
                 //convert the post data into byte array
                byte[] byteArray = Encoding.UTF8.GetBytes(postData);
             
                //set the ContentType property
                request.ContentType = "application/x-www-form-urlencoded";
             
                Stream dataStream = request.GetRequestStream();
                dataStream.Write(byteArray, 0, byteArray.Length);
               
                 //Send the POST request
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                //print the response code from the server
                Console.WriteLine(((HttpWebResponse)response).StatusDescription);

               

                dataStream = response.GetResponseStream();
                StreamReader reader = new StreamReader(dataStream);


               //print the response body received from the server
                string responseFromServer = reader.ReadToEnd();

                Console.WriteLine("Response of the post request is -> " + responseFromServer );

                dataStream.Close();
                response.Close();

             

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }

When you send the POST request to the web server, you may get errors like session expired or Internal server error. To fix these issues, you can visit this solution.


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