检查aspx页面中的对象属性

Question

I have a property public Client Clients { get; set; } 我有一个属性public Client Clients { get; set; } public Client Clients { get; set; }

If I have an object on load as so: 如果我有一个加载对象，如下：

Client objClients = populate();
if (objClients != null)
{
    Clients = objClients;
}

Would I be able to access the properties of this object in aspx page eg in if statement. 我是否能够在aspx页面中访问此对象的属性，例如在if语句中。

I have done like following but my page comes blank and the load event don't run so I assume it is not correct: 我做了类似跟随，但我的页面空白，加载事件没有运行所以我认为它是不正确的：

<%if (this.Clients.Address1.Trim().Length > 0)
 { }%>

EDIT:::: 编辑：：：：

if i do this 如果我这样做

public string Address1 { get; set; }
Client objClients = populate();
if (objClients != null)
            {
 Address1 = objClients.Address1;
}

and then in aspx file do this it works fine any reasons??? 然后在aspx文件中执行此操作它可以正常工作???

 <%if (Address1.Trim().Length > 0)
                      {%>
                      <%= Address1 %><br />
                    <%} %>

Answer 1

You can adjust your { } in order to to make difference between <% and <%#, maybe you want inject datas in your {}, and for this need you must use <%# 您可以调整{}以便在<％和<％＃之间进行区分，也许您希望在{}中注入数据，并且为此需要您必须使用<%#

<%= is for injecting values, <%=用于注入值，

<% is used to run code. <%用于运行代码。

For this code i inderstand but without { }, if { } contains code inside who inject datas you must use <%#. 对于这个代码我理解但没有{}，如果{}包含注入数据的代码，你必须使用<％＃。

<% if (this.Clients.Address1.Trim().Length > 0) %>

Answer 2

You still haven't posted the whole of your code behind/aspx.cs file as I think you might have an error in it. 你仍然没有在/ aspx.cs文件后面发布你的全部代码，因为我认为你可能有错误。 But I got this working with no problems at all. 但我完全没有问题。

Code-Behind 代码隐藏

namespace WebApplication1
{
    using System;

    public partial class _Default : System.Web.UI.Page
    { 
        public Client Clients { get; set; }

        protected void Page_Load(object sender, EventArgs e)
        {
            Client objClients = populate();
            if (objClients != null)
            {
                Clients = objClients;
            }
        }

        private Client populate()
        {
            return new Client() { Address1 =  "Somewhere in London" };
        }
    }

    public class Client
    {
        public string Address1 { get; set; }
    }
}

Mark-up 加价

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
        <% if (Clients.Address1.Trim().Length > 0){ %> 
            <%= Clients.Address1 %><br /> 
        <% }%>
    </form>
</body>
</html>

检查aspx页面中的对象属性

问题描述

2 个解决方案

解决方案1
1 2012-10-10 09:54:20

解决方案2
1 已采纳 2012-10-10 13:24:45

检查aspx页面中的对象属性

问题描述

2 个解决方案

解决方案1 1 2012-10-10 09:54:20

解决方案2 1 已采纳 2012-10-10 13:24:45

解决方案1
1 2012-10-10 09:54:20

解决方案2
1 已采纳 2012-10-10 13:24:45