如何在DBContext MVC中比较和调用多个连接字符串名

"ConnectionStrings": {
  "ConnectionString1": "Data Source=server1;Initial Catalog=db1;User Id=user1;Password=pass1;",
  "ConnectionString2": "Data Source=server2;Initial Catalog=db2;User Id=user2;Password=pass2;"
}

public class MyDbContext : DbContext
{
    public MyDbContext(DbContextOptions<MyDbContext> options) : base(options)
    {
    }

    // DbSet和其他实体类定义...
}

public void ConfigureServices(IServiceCollection services)
{
    // 注册第一个DBContext
    services.AddDbContext<MyDbContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("ConnectionString1")));

    // 注册第二个DBContext
    services.AddDbContext<AnotherDbContext>(options =>
        options.UseSqlServer(Configuration.GetConnectionString("ConnectionString2")));

    // 其他服务注册...
}

public class MyController : Controller
{
    private readonly MyDbContext _dbContext;

    public MyController(MyDbContext dbContext)
    {
        _dbContext = dbContext;
    }

    // 使用_dbContext进行数据库操作...
}