ASP.NET MVC使用异步Action的方法

public ActionResult Index()
{
    CustomerHelper cHelper = new CustomerHelper();
    List<Customer> result = cHelper.GetCustomerData();
    return View(result);
}

public class Customer
{
    public int Id{get;set;}
    public Name{get;set;}
}

public class CustomerHelper
{
	public async Task<List<Customer>> GetCustomerDataAsync()
	{
		MyContenxt db = new MyContext();
		var query = from c in db.Customers
					orderby c.Id ascending
					select c;
		List<Customer>	result = awai query.ToListAsycn();
		return result;				
	}
}

public async Task<ActionResult> Index()
{
	CustomerHelper cHelper = new CustomerHelper();
	List<Customer> result = await cHlper.GetCustomerDataAsync();
	return View(result);
}

@model List<Customer>
@foreach(var customer in Model)
{
	<span>@customer.Name</span>
}

[AsyncTimeout(3000)]
public async Task<ActionResult> Index()
{
	...
}

[NoAsyncTimeout]
public async Task<ActionResult> Index()
{
	...
}