How to Efficiently Send HTTP POST Requests in .NET?

<.> Send the http post request

http post request for sending data to the server. This article discusses various methods to effectively perform HTTP Post requests in the .NET.

Method A: httpclient (recommended)

HTTPClient is the preferred method for executing HTTP requests in modern .NET applications. It is fast, supports asynchronous execution, and is widely available in frameworks such as .NET Framework, .NET Standard and .NET CORE.

POST request code example:

Method B: The third party library

<code class="language-csharp">using System.Net.Http;

...

var values = new Dictionary<string, string>()
{
    { "thing1", "hello" },
    { "thing2", "world" },
};

var content = new FormUrlEncodedContent(values);

var response = await client.PostAsync("http://www.example.com/recepticle.aspx", content);

var responseString = await response.Content.ReadAsStringAsync();</code>

.NET has a lot of available third -party libraries to send HTTP requests. RESTSHARP

RESTSHARP provides a comprehensive REST client that supports multiple HTTP methods, including POST.

POST request code example:

Flurl.http

Flurl.http provides a smooth API for the HTTP request, making the code more concise and easy to read.

<code class="language-csharp">using RestSharp;

...

var client = new RestClient("http://example.com");
var request = new RestRequest("resource/{id}");
request.AddParameter("thing1", "Hello");
request.AddParameter("thing2", "world");
var response = client.Post(request);
var content = response.Content;</code>

POST request code example:

Method C: httpwebrequest (not recommended)

httpwebrequest is a remaining class that is not recommended for new development. Its performance is not as good as HTTPClient and does not support all its functions.

<code class="language-csharp">using Flurl.Http;

...

var responseString = await "http://www.example.com/recepticle.aspx"
   .PostUrlEncodedAsync(new { thing1 = "hello", thing2 = "world" })
   .ReceiveString();</code>

POST request code example:

Method D: WebClient (Not recommended)

WebClient is a packager of HTTPWEBREQUEST. Its performance is also lower than HTTPClient and limited functions.

POST request code example:

<code class="language-csharp">using System.Net;
using System.Text;
using System.IO;

...

var request = (HttpWebRequest)WebRequest.Create("http://www.example.com/recepticle.aspx");
var postData = "thing1=" + Uri.EscapeDataString("hello");
postData += "&thing2=" + Uri.EscapeDataString("world");
var data = Encoding.ASCII.GetBytes(postData);

request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;

using (var stream = request.GetRequestStream())
{
    stream.Write(data, 0, data.Length);
}

var response = (HttpWebResponse)request.GetResponse();

var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();</code>

Select the right method depends on your specific needs and target platforms. For most modern .NET applications, HTTPClient is a recommended option due to its high performance, flexibility and extensive support.

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