How to do HttpClient

MyAppClient.cs

//Use this class as a singleton in an IoC container
class MyAppClient
{
  readonly HttpClient _httpClient = new HttpClient();
  
  public async Task<string> GetChuck()
  {
    return await _httpClient.Get("http://chucknorris.com");
  }
}

//Although "using" is good in general, don't do this
using (var httpClient = new HttpClient())
{
  return await _httpClient.Get("http://chucknorris.com");
}