ASP.NET Core Interview Question #34

What are ASP.NET Core environments?

Application Structure & Configuration Junior Beginner

Quick Interview Answer

Environments allow an ASP.NET Core application to change behavior according to where it is running. The standard environment names are Development, Staging, and Production, although custom names can also be used.

Detailed Explanation

The current environment is available through IWebHostEnvironment. Applications commonly use it to enable developer diagnostics in Development while using production-safe exception handling elsewhere.

Environment checks should be used for environment-dependent behavior, not as a replacement for proper configuration or feature management.

Code Example

if (app.Environment.IsDevelopment())
{
    app.UseDeveloperExceptionPage();
}
else
{
    app.UseExceptionHandler("/Home/Error");
    app.UseHsts();
}