Example to refactor on not use else keyword

ExampleIf.cs

namespace Example;

public class ApiKeyMiddleware
{
    private readonly RequestDelegate _next;

    private const string APIKEY = "XApiKey";

    public ApiKeyMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        if (context.Request.Headers.TryGetValue(APIKEY, out
                var extractedApiKey))
        {
            var appSettings = context.RequestServices.GetRequiredService<IConfiguration>();
            var apiKey = appSettings.GetValue<string>(APIKEY);
            if (apiKey.Equals(extractedApiKey))
            {
                await _next(context);
            }
            else
            {
                context.Response.StatusCode = 401;
                await context.Response.WriteAsync("Unauthorized client");
            }
        }
        else
        {
            context.Response.StatusCode = 401;
            await context.Response.WriteAsync("Api Key was not provided ");
        }
    }
}