DictionaryExamples.cs

using System;
using System.Net.Http;
using System.Text;
// NOTE: Install the Newtonsoft.Json NuGet package.
using Newtonsoft.Json;

namespace TranslatorTextQuickStart
{
    class Program
    {
        private const string key_var = "TRANSLATOR_TEXT_SUBSCRIPTION_KEY";
        private static readonly string subscriptionKey = Environment.GetEnvironmentVariable(key_var);

        private const string endpoint_var = "TRANSLATOR_TEXT_ENDPOINT";
        private static readonly string endpoint = Environment.GetEnvironmentVariable(endpoint_var);

        static Program()
        {
            if (null == subscriptionKey)
            {
                throw new Exception("Please set/export the environment variable: " + key_var);
            }
            if (null == endpoint)
            {
                throw new Exception("Please set/export the environment variable: " + endpoint_var);
            }
        }

        static string route = "/dictionary/examples?api-version=3.0";
        // Translate from English to French.
        static string params_ = "&from=en&to=fr";

        static string uri = endpoint + route + params_;

        static string text = "great";
        static string translation = "formidable";

        async static void Examples()
        {
            System.Object[] body = new System.Object[] { new { Text = text, Translation = translation } };
            var requestBody = JsonConvert.SerializeObject(body);

            using (var client = new HttpClient())
            using (var request = new HttpRequestMessage())
            {
                request.Method = HttpMethod.Post;
                request.RequestUri = new Uri(uri);
                request.Content = new StringContent(requestBody, Encoding.UTF8, "application/json");
                request.Headers.Add("Ocp-Apim-Subscription-Key", subscriptionKey);

                var response = await client.SendAsync(request);
                var responseBody = await response.Content.ReadAsStringAsync();
                var result = JsonConvert.SerializeObject(JsonConvert.DeserializeObject(responseBody), Formatting.Indented);

                Console.OutputEncoding = UnicodeEncoding.UTF8;
                Console.WriteLine(result);
            }
        }

        static void Main(string[] args)
        {
            Examples();
            Console.ReadKey();
        }
    }
}