Startup.cs

using AireLineTicketSystem.Entities;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using Microsoft.OpenApi.Models;
using Serilog;
using System;

namespace AireLineTicketSystem
{
    public class Startup
    {
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors(options =>
            {
                options.AddPolicy("AireLineTicketSystemPolicyCors1",
                    builder =>
                    {
                        builder
                        .AllowAnyHeader()
                        .AllowAnyMethod()
                        .AllowAnyOrigin();
                        //.WithOrigins("http://localhost:*");


                    });
            });
            services.AddControllers();
            services.AddSwaggerGen(c =>
            {
                c.SwaggerDoc("v1", new OpenApiInfo { Title = "AireLineTicketSystemApi", Version = "v1"  });
            });



            services.AddDbContext<AireLineTicketSystemContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("defaultConnection")));

            services.AddScoped<AireLineTicketSystemContext>();
            services.AddAutoMapper(typeof(Startup));

            services.AddLogging(loggingBuilder =>
                loggingBuilder.AddSerilog(dispose: true));
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerfactory,
                        IHostApplicationLifetime appLifetime)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwagger();
                app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "AireLine Ticket System API v1"));
            }
            
            loggerfactory.AddSerilog();

            // Ensure any buffered events are sent at shutdown
            appLifetime.ApplicationStopped.Register(Log.CloseAndFlush);

            app.UseHttpsRedirection();
            app.UseRouting();
            app.UseCors("AireLineTicketSystemPolicyCors1");


            app.UseAuthentication();

            app.UseAuthorization();
          
            app.UseEndpoints(endpoints =>
            {

                    endpoints.MapControllers();
              
                //endpoints.MapControllerRoute(
                //    name: "default",
                //    pattern: "{controller}/{action=Index}/{id?}");
            });

           
        }
    }
}