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How to: Call url request from c#

In C# you can make a request to a web server by using WebRequest. In this blog will be show you some example to use WebRequest object to call a URL.

Make a simple request

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using System;  
using System.IO;  
using System.Net;  
using System.Text;  

namespace Examples.System.Net  
{  
    public class WebRequestGetExample  
    {  
        public static void Main()  
        {  
            // Create a request for the URL.   
            WebRequest request = WebRequest.Create(  
              "http://www.myserver.com/index.html");  
            // If required by the server, set the credentials.  
            request.Credentials = CredentialCache.DefaultCredentials;  
            // Get the response.  
            WebResponse response = request.GetResponse();  
            // Display the status.  
            Console.WriteLine (((HttpWebResponse)response).StatusDescription);  
            // Get the stream containing content returned by the server.  
            Stream dataStream = response.GetResponseStream();  
            // Open the stream using a StreamReader for easy access.  
            StreamReader reader = new StreamReader(dataStream);  
            // Read the content.  
            string responseFromServer = reader.ReadToEnd();  
            // Display the content.  
            Console.WriteLine(responseFromServer);  
            // Clean up the streams and the response.  
            reader.Close();  
            response.Close();  
        }  
    }  
}

Submit JSON as POST data


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using System;  
using System.IO;  
using System.Net;  
using System.Text;  

namespace Examples.System.Net  
{  
    public class WebRequestGetExample  
    {  
        public static void Main()  
        {  
                String url = "http://www.myhost.com/process";

                // Create a request for the URL. 
                HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);

                httpWebRequest.Timeout = 5000;

                // Set ContentType as json
                httpWebRequest.ContentType = "application/json; charset=utf-8";

                // Submit data as POST method
                httpWebRequest.Method = "POST";

                // Write json data into stream
                using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
                {
                    streamWriter.Write(jsonData);
                    streamWriter.Flush();

                }

                // Get response from remote server
                HttpWebResponse httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (StreamReader streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    string responseText = streamReader.ReadToEnd();
                }
        }  
    }  
}



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