using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        // ... (other existing code)

​

        var requestData = new Dictionary<string, string>

        {

            { "client_id", clientId },

            { "client_secret", clientSecret },

            { "grant_type", "client_credentials" }, // Adjust if needed

            // Add other necessary parameters if required by your STS

        };

​

        var content = new FormUrlEncodedContent(requestData);

        var response = await _httpClient.PostAsync("/connect/token", content);

​

        // ... (rest of the code)

​

    }

}