Developer Exception Page Middleware Changes

Overview

• Developer exception page middleware catches unhandled exceptions in the request pipeline and displays detailed information about the exception
• It runs early in the middleware pipeline and catches exception throws in the middleware that follows.
• For security reasons, detailed exception information shouldn't be displayed when the app runs in the Production environment.
• Developer Exception Page can include the following information about the exception and the request:
  • Stack trace
  • Query string parameters, if any
  • Cookies, if any
  • Headers

Adding Developer Exception Page Middleware

From ASP.NET Core 6.0 - Default Added

From ASP.NET Core 6.0, web apps add the developer exception page by default when running in the Development environment.

Older Version

if (app.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}