EventUtils.cs

using System;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;

namespace TPP.Core
{
    public static class EventUtils
    {
        /// <summary>
        /// Methods with the signature 'async void' must be avoided,
        /// because exceptions occurring in those methods cannot be caught and propagate to the SynchronizationContext,
        /// which in terms makes the program crash in totally unrelated places.
        /// Event handlers calling into async code however must have a signature of 'void'.
        /// In those cases the recommendation to avoid the mentioned headaches is to use this method to safely turn
        /// an 'async Task' into an 'async void' by wrapping the entire code in a try-block.
        /// Any errors are logged to the provided logger instead of being propagated.
        /// </summary>
        public static async void TaskToVoidSafely(ILogger logger, Func<Task> action)
        {
            try
            {
                await action();
            }
            catch (Exception ex)
            {
                logger.LogError(ex, "Unexpected error in async void handler");
            }
        }
    }
}