ASP .NET Middleware

...
using Microsoft.AspNetCore.Mvc;
using System.Net;
using System.Text.Json;

namespace ...;

public class GlobalErrorHandlingMiddleWare : IMiddleware
{
   private readonly ILogger<GlobalErrorHandlingMiddleWare> _logger;

   public GlobalErrorHandlingMiddleWare(ILogger<GlobalErrorHandlingMiddleWare> logger) => _logger = logger;

    public async Task InvokeAsync(HttpContext context, RequestDelegate next)
    {
        try
        {
            await next(context);
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, ex.Message);

            ProblemDetails problemDetails = new();

            problemDetails = ex.GetType().Name switch
            {
                //400
                nameof(BadRequestException) => ((BadRequestException)ex).GetProblemDetails(),
                _ => new()
                {
                   ....
                },
            };
#if DEBUG
            problemDetails.Detail = $"{problemDetails.Detail} Stack trace: {ex.StackTrace}";
#endif
            var json = JsonSerializer.Serialize(problemDetails);
            context.Response.StatusCode = problemDetails.Status.Value;
            context.Response.ContentType = "application/json";
            await context.Response.WriteAsync(json);
        }
        throw new NotImplementedException();
    }
}

public class BaseCustomException : Exception
{
    public string MessageDescription { get; }
    public BaseCustomException(string message, string messageDescription) : base(message)
    {
        MessageDescription = messageDescription;
    }
    public virtual ProblemDetails GetProblemDetails(HttpStatusCode statusCode, string problemType)
    {
        return new ProblemDetails()
        {
            Status = (int)statusCode,
            Type = problemType,
            Title = Message,
            Detail = MessageDescription
        };
    }
}
public class BadRequestException : BaseCustomException
{
    public BadRequestException(string message, string messageDescription)
        : base(message, messageDescription) { }
    public ProblemDetails GetProblemDetails()
    {
        return GetProblemDetails(HttpStatusCode.BadRequest, "Bad request");
    }
}