Handle Errors on Asp.net core6 mvc

I am studying asp.net core and I need to fix error handling problems.

I have some questions about them

1- should we catch all error types and return specific views each of them? 400 401 403 404 500 and more

2-if yes, which method is the best practice? Middleware or filters or any other? Can you share some samples please?

3-if no, what kind of route should I follow for errors ?

You can get all the response codes, it's up to you whether you need to display a different page for each code.

For example, use UseStatusCodePagesWithReExecute middleware:

Program.cs:

app.UseStatusCodePagesWithReExecute("/Home/Error", "?statusCode={0}");

Controller:

public IActionResult Error(int? statusCode = null)
{
    if (statusCode.HasValue) 
    {
        ViewData["Message"] = statusCode;
        return View("ErrorPage");
    }
    return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}

[Route("ErrorPage")]
public IActionResult ErrorPage()
{
    return View();
}

In ErrorPage.cshtml, you can use ViewData["Message"] to get the response code and display different content for it.

Or you can create a view for each response code like this.

For more details, you can refer to this document.