Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Transactions;
using AutoMapper;
using forgeSampleAPI_DotNetCore.Core.Extensions;
using forgeSampleAPI_DotNetCore.Models.Mapping.AutoMapper;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Http.Features;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Formatters;
using Microsoft.AspNetCore.Server.Kestrel.Core;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

namespace forgeSampleAPI_DotNetCore
{
    public class Startup
    {
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc(options => options.EnableEndpointRouting = false)
                .SetCompatibilityVersion(CompatibilityVersion.Latest)
                .AddNewtonsoftJson();


            var mappingConfig=new MapperConfiguration(mc =>
            {
                mc.AddProfile(new CreateBucketMapping());
                mc.AddProfile(new UploadFileMapping());
                mc.AddProfile(new TranslateObjectMapping());
                mc.AddProfile(new ModelDetailsMapping());
            });

            IMapper mapper = mappingConfig.CreateMapper();
            services.AddSingleton(mapper);
            services.Configure<IISServerOptions>(options =>
            {
                options.MaxRequestBodySize = int.MaxValue;
            });

            services.Configure<KestrelServerOptions>(options =>
            {
                options.Limits.MaxRequestBodySize = int.MaxValue;
            });

            services.Configure<FormOptions>(x =>
            {
                x.ValueLengthLimit = int.MaxValue;
                x.MultipartBodyLengthLimit = int.MaxValue;
                x.MultipartHeadersLengthLimit = int.MaxValue;
            });
        }
        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseDefaultFiles();
            app.UseStaticFiles();
            app.ConfigureToCustomExceptionHandlerMiddleware();
            app.UseHttpsRedirection();
            app.UseMvc();

            
        }
    }
}