ViewData与TempData属性来向View页传递对象
上文中已经提到,使用ViewData可以将数据由Controller传递到View
在前文中我们建立了EiceController类
在本文的示例中我们将这个Controller改一下
namespace
MvcApplication2.Controllers
![](https://yqfile.alicdn.com/img_405b18b4b6584ae338e0f6ecaf736533.gif?x-oss-process=image/resize,w_1400/format,webp)
{
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
/// <summary>
/// 记不记得前面讲过的,所有Controller都要继承于
/// Controller类
当然Controller有很多种,我们慢慢讲
/// </summary>
public class EiceController : Controller
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
{
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
public void Index() {
ViewData["ViewData"] = "在这里显示ViewData";
TempData["TempData"] = "在这里显示TempData";
RenderView("Index");
}
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
public void Index2() {
RenderView("Index");
}
}
}
我们将Index的参数移除,并提供了ViewData和TempData的赋值
在Views/Eice/Index.aspx这个View中我们写以下代码
1
:
<%=
ViewData[
"
ViewData
"
]
%><
br
/>
2
:
<%=
TempData[
"
TempData
"
]
%>
注意上面的1.2不是行号...
接下来我们运行工程
访问http://localhost/Eice/Index
可以看到运行得到以下
1
.在这里显示ViewData
2
.在这里显示TempData
再访问http://localhost/Eice/Index2
显示结果为
1
.
2
.在这里显示TempData
这里1显示是的ViewData中的内容,2为TempData传递的内容
我们可以看到
ViewData只能在本Action中有效
但是TempData可以类似于Session一样到其它页面仍然存在,但只限一页的访问(类似于Monorail中的Flash)
TempData一般用于临时的缓存内容或抛出错误页面时传递错误信息
Redirect方法跳转页面到其它的Controller/Action
RedirectToAction(Action名);
RedirectToAction(Action名, Controller名);
RedirectToAction(RouteValueDictionary);
在这里前两种都没有什么好说的
RedirectToAction("About","Home");就是一种写法
主要是第三种重载
用户可以这样写
System.Web.Routing.RouteData routeData
=
new
System.Web.Routing.RouteData();
routeData.Values.Add(
"
Action
"
,
"
About
"
);
routeData.Values.Add(
"
Controller
"
,
"
Home
"
);
RedirectToAction(routeData.Values);
这样就可以完成页面跳转
当然,也可以使用传统的Response.Redirect来完成页面的跳转
Asp.net Mvc Framework 系列
上文中已经提到,使用ViewData可以将数据由Controller传递到View
在前文中我们建立了EiceController类
在本文的示例中我们将这个Controller改一下
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_405b18b4b6584ae338e0f6ecaf736533.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_1c53668bcee393edac0d7b3b3daff1ae.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_7a2b9a960ee9a98bfd25d306d55009f8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a76e9bb6ed00cf1c9c9f4ee2f04b558b.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_105a1e124122b2abcee4ea8e9f5108f3.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_7a2b9a960ee9a98bfd25d306d55009f8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_7a2b9a960ee9a98bfd25d306d55009f8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_105a1e124122b2abcee4ea8e9f5108f3.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_2887d91d0594ef8793c1db92b8a1d545.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_7a2b9a960ee9a98bfd25d306d55009f8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_33d02437d135341f0800e3d415312ae8.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_105a1e124122b2abcee4ea8e9f5108f3.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_105a1e124122b2abcee4ea8e9f5108f3.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_05dd8d549cff04457a6366b0a7c9352a.gif?x-oss-process=image/resize,w_1400/format,webp)
在Views/Eice/Index.aspx这个View中我们写以下代码
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
接下来我们运行工程
访问http://localhost/Eice/Index
可以看到运行得到以下
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
再访问http://localhost/Eice/Index2
显示结果为
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
我们可以看到
ViewData只能在本Action中有效
但是TempData可以类似于Session一样到其它页面仍然存在,但只限一页的访问(类似于Monorail中的Flash)
TempData一般用于临时的缓存内容或抛出错误页面时传递错误信息
Redirect方法跳转页面到其它的Controller/Action
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
主要是第三种重载
用户可以这样写
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
![](https://yqfile.alicdn.com/img_a6339ee3e57d1d52bc7d02b338e15a60.gif?x-oss-process=image/resize,w_1400/format,webp)
这样就可以完成页面跳转
当然,也可以使用传统的Response.Redirect来完成页面的跳转
Asp.net Mvc Framework 系列