.NET Framework HTTP clients Sending a POST request with a string payload using System.Net.WebClient
Example
string requestUri = "http://www.example.com";
string requestBodyString = "Request body string.";
string contentType = "text/plain";
string requestMethod = "POST";
byte[] responseBody;
byte[] requestBodyBytes = Encoding.UTF8.GetBytes(requestBodyString);
using (var client = new WebClient())
{
client.Headers[HttpRequestHeader.ContentType] = contentType;
responseBody = client.UploadData(requestUri, requestMethod, requestBodyBytes);
}
