How to make an HTTP request to an HTTP-based service in C#

A minimalist explanation as follows. 1. Create the HTTP Web Request Create the WebRequest object from the from the Universal Resource Identifier (URI) you supply eg [code language="csharp"] const string Url = "http://www.microsoft.com"; var webRequest = WebRequest.Create(Url); [/code] 2. Send the HTTP request and wait for the response [code language="csharp"] var responseStream = webRequest.GetResponse().GetResponseStream(); [/code] 3. Create a StreamReader object The StreamReader object is used to read back the text characters from the HTTP response: I use the ‘using’ statement as a convenient means of ensure the object is subsequently disposed. [code language="csharp"] using(var streamReader = new StreamReader(responseStream)) { // Return next available character or -1 if there are no characters to be read while (streamReader.Peek() > -1) { Console.WriteLine(streamReader.ReadLine()); } } [/code] Complete code listing: [code language="csharp"] using System; using System.IO; using System.Net; namespace GetRequest { internal class Program { private static void Main(string[] args) { // Create the http request const string Url = "http://www.microsoft.com"; var webRequest = WebRequest.Create(Url); // Send the http request and wait for the response var responseStream = webRequest.GetResponse().GetResponseStream(); // Displays the response stream text if (responseStream != null) { using(var streamReader = new StreamReader(responseStream)) { // Return next available character or -1 if there are no characters to be read while (streamReader.Peek() > -1) { Console.WriteLine(streamReader.ReadLine()); } } } Console.ReadLine(); } } } [/code] Giving the following console output: httprequest1 4. Using timeouts To do this set the Timeout property on the WebRequest object. To demonstrate I have set this value deliberately low, not giving the web request the chance to get the HTTP reponse: [code language="csharp"] webRequest.Timeout = 1; [/code] Example implementation: [code language="csharp"] using System; using System.IO; using System.Net; namespace GetRequest { internal class Program { private static void Main(string[] args) { // Create the http request const string Url = "http://www.microsoft.com"; var webRequest = WebRequest.Create(Url); webRequest.Timeout = 1; try { // Send the http request and wait for the response var responseStream = webRequest.GetResponse().GetResponseStream(); // Displays the response stream text if (responseStream != null) { using(var streamReader = new StreamReader(responseStream)) { // Return next available character or -1 if there are no characters to be read while (streamReader.Peek() > -1) { Console.WriteLine(streamReader.ReadLine()); } } } Console.ReadLine(); } catch (Exception ex) { Console.WriteLine(ex.Message); } } } } [/code] Giving the following output: httprequest2

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