Angular CORS enabled web api server in C# .net 6

ConfigurationsController.cs

using dtos;
using Microsoft.AspNetCore.Mvc;

namespace web.api
{
    [Route("api/[controller]")]
    [ApiController]
    public class ConfigurationsController : ControllerBase
    {
        [HttpGet]
        [Route("")]
        public string index()
        {
            return "It works!";
        }

        [HttpGet]
        [Route("school")]
        // https://localhost:7014/api/configurations/school/
        public configurations school()
        {
            configurations c = new configurations();
            return c;
        }
    }
}

Program.cs

using Microsoft.AspNetCore.Cors;

WebApplicationBuilder builder = WebApplication.CreateBuilder(args);

string MyAllowSpecificOrigins = "_myAllowSpecificOrigins";
builder.Services.AddCors(options =>
{
    options.AddPolicy(name: MyAllowSpecificOrigins,
        builder =>
        {
            builder.WithOrigins(
                "http://localhost:4200", // angular
                "https://localhost:7257", // web api
                "*"
            )
            .AllowAnyHeader()
            .AllowAnyMethod();
        });
});

builder.Services.AddRazorPages();

WebApplication app = builder.Build();

if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}

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

app.UseRouting();
app.UseCors(MyAllowSpecificOrigins);

app.UseAuthorization();

app.MapRazorPages();

app.UseEndpoints(endpoints => {
    endpoints.MapControllerRoute(
        name: "default",
        pattern: "api/{controller}/{action=index}/{id?}"
    );
});

app.MapControllers();

app.Run();