Program.cs

using FluentValidation.AspNetCore;
using Hospital.Data;
using Hospital.Repository;
using Microsoft.EntityFrameworkCore;
using System.Reflection;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddDbContext<DataContext>(options =>
{
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefualtConnection"));
});
builder.Services.AddControllersWithViews()
    .AddNewtonsoftJson(options =>
    options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
);
builder.Services.AddScoped<ITestRepository, TestRepository>();
builder.Services.AddScoped<IPatientRepository, PatientRepository>();
builder.Services.AddControllers().AddFluentValidation(options =>
{
    // Validate child properties and root collection elements
    options.ImplicitlyValidateChildProperties = true;
    options.ImplicitlyValidateRootCollectionElements = true;

    // Automatic registration of validators in assembly
    options.RegisterValidatorsFromAssembly(Assembly.GetExecutingAssembly());
});
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddAutoMapper(typeof(Program));

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.Run();