Using ILogger to log errors and information

Sample Controller.cs

public class SampleController
{
    private readonly ILogger<SampleController> _logger;
    private readonly HttpClient _httpClient;
    public SampleController(HttpClient httpClient, ILogger<SampleController> logger)
    {
        _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
        _logger.LogTrace("ILogger injected into {0}", nameof(SampleController));
    }

    public async Task NetworkRequestSampleAsync(string url)
    {
        try
        {
            _logger.LogInformation(LoggingEvents.Networking, "NetworkRequestSampleAsync started with url {0}", url);

            string result = await _httpClient.GetStringAsync(url);
            _logger.LogInformation(LoggingEvents.Networking, "NetworkRequestSampleAsync completed, received {0} characters", result.Length);
        }
        catch (Exception ex)
        {
            _logger.LogError(LoggingEvents.Networking, ex, "Error in NetworkRequestSampleAsync, error message: {0}, HResult: {1}", ex.Message, ex.HResult);
        }
    }
}