How to send web requests parallely using C#.

Question

I want to test my couple of webservices. How to send httpWebRequests parallely?

The following question is related: stackoverflow.com/questions/5747993/…. — Ikaso
– Ikaso, Commented Oct 21, 2012 at 9:55

Ikaso · Accepted Answer · 2012-10-21 09:43:34Z

3

Did you try to use the Task Parallel library. You can find more information here.

For example you can call the Invoke method to perform a couple of delegates in parallel:

Parallel.Invoke(() => DoSomeWork(), () => DoSomeOtherWork());

answered Oct 21, 2012 at 9:43

Ikaso

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testCoder · Accepted Answer · 2012-10-21 10:21:14Z

Try this:

   new List<string>
                    {
                        "http://www.stackoverflow.com",
                        "http://www.google.com"
                    }
                    .AsParallel().ForAll(x =>
                                             {
                                                 var client = new WebClient();
                                                 client.DownloadStringAsync(new Uri(x));
                                                 client.DownloadStringCompleted +=
                                                     (o, e) =>
                                                         {
                                                             var result = e.Result; // html will be here
                                                             Console.WriteLine("Completed");
                                                         };
                                             });

Or this:

Parallel.ForEach(new List<string>
                                 {
                                     "http://www.stackoverflow.com",
                                     "http://www.google.com"
                                 }, x =>
                                        {
                                            var client = new WebClient();
                                            client.DownloadStringAsync(new Uri(x));
                                            client.DownloadStringCompleted +=
                                                (o, e) =>
                                                {
                                                    var result = e.Result; // html will be here
                                                    Console.WriteLine("Completed");
                                                };
                                        }

For more information read Parallel Programming

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