Program.cs

using Microsoft.EntityFrameworkCore;
using MyProject.Model;
using MyProject.Repository;
using System.Text.Json;
using System.Text.Json.Serialization;
using Microsoft.AspNetCore.Http.Json;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

// Program.cs
builder.Services.AddScoped<IEmployeeRepository, EmployeeRepository>();

builder.Services.AddControllersWithViews();

builder.Services.AddDbContext<AppDbContext>(options =>
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection")));

builder.Services.Configure<JsonOptions>(options =>
{
    options.SerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles;
    options.SerializerOptions.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
});

//builder.Services.AddCors(options => {
//    options.AddPolicy("AllowAll", builder =>
//        builder.AllowAnyOrigin()
//            .AllowAnyMethod()
//            .AllowAnyHeader());
//});

var app = builder.Build();

// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
    app.UseHsts();
}

app.UseCors("AllowAll");
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();


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

app.MapFallbackToFile("index.html");;

app.Run();