MVC分页

一、Contrl与View数据传递(多表数据)

1)ViewBag变量方式

使用4个ViewBag变量进行数据传递,Data1、Data2、Data3、Data4的数据直接从数据库里调。

Control中伪代码如下所示:

public ActionResult CnBlogIndex()
2         {
3             ViewBag.Data1 = Data1;
4             ViewBag.Data2 = Data2;
5             ViewBag.Data3 = Data3;
6             ViewBag.Data4 = Data4;
7             return View();
8         }

View中伪代码如下所示:

//第一块内容
 2 @foreach (Data1 data in (ViewBag.Data1 as IEnumerable<Data1>))
 3 {
 4     <tr>
 5         <td>@Html.DisplayFor(model => data.ID)</td>
 6     </tr>
 7 }
 8 //第二块内容
 9 @foreach (Data2 dat1 in (ViewBag.Data2 as IEnumerable<Data2>))
10 {
11     <tr>
12         <td>@Html.DisplayFor(model => data.ID)</td>
13     </tr>
14 }
15 //第三块内容
16 @foreach (Data3 data in (ViewBag.Data3 as IEnumerable<Data3>))
17 {
18     <tr>
19         <td>@Html.DisplayFor(model => data.ID)</td>
20     </tr>
21 }
22 //第四块内容
23 @foreach (Data4 data in (ViewBag.Data4 as IEnumerable<Data4>))
24 {
25     <tr>
26         <td>@Html.DisplayFor(model => data.ID)</td>
27     </tr>
28 }

2)ViewModel方式(推荐)

什么是ViewModel?ViewModel就是针对视图做的Model,让Model更加适合于View。Data1、Data2、Data3、Data4的数据直接从数据库里取出,然后组装给ViewModel,ViewModel做为整个页面的数据载体进行数据传递:

ViewModel中的伪代码如下所示:

public class CnBlogIndex {
2         List<Data> Data1 { get; set; }
3         List<Data> Data2 { get; set; }
4         List<Data> Data3 { get; set; }
5         List<Data> Data4 { get; set; }
6     }

Control中伪代码如下所示:

  public ActionResult CnBlogIndex()
         {
             ViewModel.CnBlogIndex CnBlogIndex = new ViewModel.CnBlogIndex();
             CnBlogIndex.Data1 = Data1;
             CnBlogIndex.Data2 = Data2;
             CnBlogIndex.Data3 = Data3;
             CnBlogIndex.Data4 = Data4;
             return View(CnBlogIndex);
         }

View中伪代码如下所示:

@model CnBlogIndex
 2 @foreach (var info in Model.Data1)
 3     {
 4         <tr>
 5             <td>info.**</td>
 6         </tr>
 7     }
 8 @foreach (var info in Model.Data2)
 9     {
10         <tr>
11             <td>info.**</td>
12         </tr>
13     }
14 @foreach (var info in Model.Data3)
15     {
16         <tr>
17             <td>info.**</td>
18         </tr>
19     }
20 @foreach (var info in Model.Data4)
21     {
22         <tr>
23             <td>info.**</td>
24         </tr>
25     }

 

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