Llamando a un flujo de Power Automate desde .NET

private string uri = "HTTP POST URL";

public async Task SendEmailAsync(string username, string toAddress, string emailSubject){    try    {        HttpClient client = new HttpClient();        client.BaseAddress = new Uri(uri);        client.DefaultRequestHeaders.Accept.Clear();        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));        HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, client.BaseAddress);        var body = $"{{\"emailAddress\": \"{toAddress}\",\"emailSubject\":\"{emailSubject}\",\"userName\":\"{username}\"}}";        var content = new StringContent(body, Encoding.UTF8, "application/json");        request.Content = content;        var response = await MakeRequestAsync(request, client);        Console.WriteLine(response);    }    catch (Exception e)    {        Console.WriteLine(e.Message);        throw new Exception();    }}

public async Task<string> MakeRequestAsync(HttpRequestMessage getRequest, HttpClient client){    var response = await client.SendAsync(getRequest).ConfigureAwait(false);    var responseString = string.Empty;    try    {        response.EnsureSuccessStatusCode();        responseString = await response.Content.ReadAsStringAsync().ConfigureAwait(false);    }    catch (HttpRequestException)    {        // empty responseString    }    return responseString;}

await new PowerAutomateService().SendEmailAsync(student.FirstName, student.Email, "Greetings from ASP.NET / DotVVM web application.");