在我最近使用 Asp.net Mvc 2 的项目中,我们发现 DisplayFor 存在性能问题。我不太确定这是真正的问题还是我错过了什么?
我希望一些 Asp.net Mvc Guru 可以向我解释。:)
模型。
public class Customer
{
public int CustomerId { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public string EmailAddress { get; set; }
public static IEnumerable<Customer> GetCustomers()
{
for (int i = 0; i < 1000; i++)
{
var cust = new Customer()
{
CustomerId = i + 1,
Name = "Name - " + (i + 1),
Address = "Somewhere in the Earth...",
EmailAddress = "customerABC"
};
yield return cust;
}
}
}
控制器
public ActionResult V1()
{
return View(Customer.GetCustomers());
}
public ActionResult V2()
{
return View(Customer.GetCustomers());
}
V1(有性能问题)
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<IEnumerable<Customer>>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
V1
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>V1</h2>
<table>
<%foreach (var cust in this.Model)
{%>
<%= Html.DisplayFor(m => cust) %>
<%} %>
</table>
</asp:Content>
模板是
<%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<Customer>" %>
<tr>
<td><%= this.Model.CustomerId %></td>
<td><%= this.Model.Name %></td>
<td><%= this.Model.Address %></td>
<td><%= this.Model.EmailAddress %></td>
</tr>
V2(无性能问题)
<%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<IEnumerable<Customer>>" %>
<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
V2
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>V2</h2>
<table>
<%foreach (var cust in this.Model)
{%>
<tr>
<td><%= cust.CustomerId%></td>
<td><%= cust.Name%></td>
<td><%= cust.Address%></td>
<td><%= cust.EmailAddress%></td>
</tr>
<%} %>
</table>
</asp:Content>
我可以很容易地看到 V1 和 V2 之间的性能差异。
编辑:当我部署到我的本地 IIS 7(带有发布版本)并且它(V1)变得非常快。问题解决了,但还是想知道原因。:)
谢谢,
苏萌