Program.cs

using EmployeeManagement.Models;
using Microsoft.AspNetCore.Identity;
using Microsoft.EntityFrameworkCore;
using NLog;
using NLog.Web;
using System.Reflection.Metadata;

namespace EmployeeManagement
{
    public class Program
    {
        private IConfiguration _config;

        public Program(IConfiguration config)
        {
                    _config=config;
        }



        public static void Main(string[] args)
        {
           
			var logger = NLog.LogManager.Setup().LoadConfigurationFromAppSettings().GetCurrentClassLogger();
			logger.Debug("init main");
			var builder = WebApplication.CreateBuilder(args);

			builder.Logging.ClearProviders();
			builder.Host.UseNLog();
			// Add services to the container.
			builder.Services.AddControllersWithViews();//.AddXmlSerializerFormatters();
            builder.Services.AddDbContextPool<AppDbContext>(
                options => options.UseSqlServer(builder.Configuration.GetConnectionString("EmployeeDBConnection")));
             ///making the IEmployeeRepository implemnted By MockEmployeeRepositroy
            ///as a service, so that it's implemented once in here as singleton
          builder.Services.AddIdentity<IdentityUser, IdentityRole>(options =>
          {
              options.Password.RequiredLength = 10;
              options.Password.RequiredUniqueChars = 3;
              options.Password.RequireNonAlphanumeric = false;
          }).AddEntityFrameworkStores<AppDbContext>();

            //builder.Services.Configure<IdentityOptions>(options =>
            //{
            //    options.Password.RequiredLength = 10;
            //    options.Password.RequiredUniqueChars = 3;
            //    options.Password.RequireNonAlphanumeric = false;
            //});
            builder.Services.AddScoped<IEmployeeRepository,SQLEmployeeRepository>();

            var app = builder.Build();

            // Configure the HTTP request pipeline.
            if (app.Environment.IsDevelopment())
            {

                //app.UseDeveloperExceptionPage();



                
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }else
            {
				app.UseExceptionHandler("/Home/Error");
				app.UseStatusCodePagesWithReExecute("/Error/{0}");
            }

            app.UseHttpsRedirection();
            //app.UseDefaultFiles();
            app.UseStaticFiles();

            app.UseRouting();

            app.UseAuthentication();
            app.UseAuthorization();
             
            app.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Index}/{id?}");

            app.Run();
        }
    }
}