无法在asp dotnet核心web api中创建HttpGet和HttpDelete

[Route("api/[controller]")]
[ApiController]
public class MyController : ControllerBase
{
    [HttpGet]
    public IActionResult Get()
    {
        // 处理HttpGet请求
        return Ok("Get request");
    }

    [HttpDelete]
    public IActionResult Delete()
    {
        // 处理HttpDelete请求
        return Ok("Delete request");
    }
}

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddControllers();
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        app.UseRouting();

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