我正在使用cqrs和mediatr模式用.net6构建一个n层web API。
但是，当我想添加第一个迁移时，出现了以下异常。

无法创建类型为“WorldCupApiDbContext”的对象。有关设计时支持的不同模式，请参阅https://go.microsoft.com/fwlink/?linkid=851728

This is what my solution looks like:
我的Program.cs代码：

using System.Reflection;
using MediatR;
using Microsoft.EntityFrameworkCore;
using WorldCupApi.Application.Handler.QueryHandler;
using WorldCupApi.Repository.Entities;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();

builder.Services.AddDbContextPool<WorldCupApiDbContext>(options =>
{
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"));
});

builder.Services.AddMediatR(typeof(GetGroupQueryHandler).GetTypeInfo().Assembly);

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();

我的DbContext代码：

using Microsoft.EntityFrameworkCore;

namespace WorldCupApi.Repository.Entities;

public class WorldCupApiDbContext : DbContext
{
    public WorldCupApiDbContext(DbContextOptions<WorldCupApiDbContext> options) : base(options)
    {
        
    }
    
    //entities
    public DbSet<Group> Groups { get; set; }
    public DbSet<Team> Teams { get; set; }
}

我尝试按如下方式编辑DbContext寄存器，但不起作用。

builder.Services.AddDbContextPool<WorldCupApiDbContext>(options =>
{
    options.UseSqlServer(builder.Configuration.GetConnectionString("DefaultConnection"), 
        b=> b.MigrationsAssembly("WorldCupApi.Repository"));
});

如果你需要更多的细节，我可以尽快发送，请帮助我。