AsyncEventHandlers.cs

using System;
using System.Threading.Tasks;

/// <summary>
/// <see href="https://www.devleader.ca/2023/02/14/async-eventhandlers-a-simple-safety-net-to-the-rescue/">Async EventHandlers – A Simple Safety Net To The Rescue</see>
/// </summary>
public static class AsyncEventHandlers
{
    public static EventHandler<TArgs> TryAsync<TArgs>(
        Func<object?, TArgs, Task> callback,
        Action<Exception> errorHandler) where TArgs : EventArgs
    {
        return TryAsync(callback, ex => {
            errorHandler.Invoke(ex);

            return Task.CompletedTask;
        });
    }

    public static EventHandler<TArgs> TryAsync<TArgs>(
        Func<object?, TArgs, Task> callback,
        Func<Exception, Task> errorHandler) where TArgs : EventArgs
    {
        return new EventHandler<TArgs>(async (object? s, TArgs e) => {
            try
            {
                await callback.Invoke(s, e);
            }
            catch (Exception ex)
            {
                await errorHandler.Invoke(ex);
            }
        });
    }
}