ASP.NET MVC 3 Beta中除了推出一种新的视图引擎Razor。还推出了几种新的HtmlHelper。我比较关注的是WebGrid,这篇文章将介绍一下WebGrid的使用。WebGrid提供了分页和排序的功能,在此之前在MVC中分页和排序时需要自己去写的。这篇文章将分别介绍在aspx视图引擎和Razor视图引擎中如何使用它。
我通过ADO.NET Entity Data Model从NORTHWND的Products中表中取数据。在Controller中取数据:
- public class HomeController : Controller
- { public ActionResult Index()
- {
- NORTHWNDEntities entity = new NORTHWNDEntities();
- return View( entity.Products.ToList());
- } }
在aspx视图引擎中使用WebGrid代码如下:
- <div id="grid">
- <% var grid = new WebGrid(source: Model, defaultSort: "ProductName", rowsPerPage: 5); %>
- <%=grid.GetHtml(
- tableStyle: "grid",
- headerStyle: "head",
- alternatingRowStyle: "alt",
- columns: grid.Columns(
- grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { id = item.ProductID })),
- grid.Column(format: (item) => Html.ActionLink("Delete", "Delete", null, new { onclick = string.Format("deleteRecord('Employee', '{0}')", item.ProductID), @class = "Delete", href = "JavaScript:void(0)" })),
- grid.Column("ProductName","产品名称"),
- grid.Column("QuantityPerUnit","每单位数量"),
- grid.Column("UnitPrice","单价"),
- grid.Column("UnitsInStock", "库存单位"),
- grid.Column("UnitsOnOrder","订单单位"),
- grid.Column("ReorderLevel","重新排序级别"),
- grid.Column("Discontinued","已停产") ) ) %>
- </div>
在Razor中使用WebGrid代码如下:
- <div id="grid">
- @{
- var grid = new WebGrid(source: Model,
- defaultSort: "ProductName",
- rowsPerPage: 10);
- }
- @grid.GetHtml(
- tableStyle: "grid",
- headerStyle: "head",
- alternatingRowStyle: "alt",
- columns: grid.Columns(
- grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { id = item.ProductID })),
- grid.Column(format: (item) => Html.ActionLink("Delete", "Delete", null, new { onclick = string.Format("deleteRecord('Product', '{0}')", item.ProductID), @class = "Delete", href = "JavaScript:void(0)" })),
- grid.Column("ProductName","产品名称"),
- grid.Column("QuantityPerUnit","每单位数量")
- ,grid.Column("UnitPrice","单价"),
- grid.Column("UnitsInStock", "库存单位"),
- grid.Column("UnitsOnOrder","订单单位"),
- grid.Column("ReorderLevel","重新排序级别"),
- grid.Column("Discontinued","已停产")))</div>
WebGrid构造函数如下:
- public WebGrid(IEnumerable<dynamic> source,
- IEnumerable<string> columnNames = null,
- string defaultSort = null,
- int rowsPerPage = 10,
- bool canPage = true, bool canSort = true,
- string ajaxUpdateContainerId = null,
- string fieldNamePrefix = null,
- string pageFieldName = null,
- string selectionFieldName = null,
- string sortFieldName = null,
- string sortDirectionFieldName = null);
常见参数意思是:
1、source 表示数据源
2、columnNames表示显示的列
3、defaultSort 默认按什么排序
4、rowsPerPage 每页多少行数据
5、canPage 是否能排序
上面两段代码的意思是定义了一个既分页又能排序的grid。
运行:
在看看两个view的完整代码:
aspx:
- <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<List<WebGridAspx.Models.Products>>" %>
- <asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
- 产品列表
- </asp:Content>
- <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
- <script type="text/javascript">
- function deleteRecord(a, b) {
- alert("删除:"+b);
- }</script>
- <h2>产品列表</h2>
- <div id="grid">
- <% var grid = new WebGrid(source: Model, defaultSort: "ProductName", rowsPerPage: 5); %>
- <%=grid.GetHtml(
- tableStyle: "grid",
- headerStyle: "head",
- alternatingRowStyle: "alt",
- columns: grid.Columns(
- grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { id = item.ProductID })),
- grid.Column(format: (item) => Html.ActionLink("Delete", "Delete", null, new { onclick = string.Format("deleteRecord('Employee', '{0}')", item.ProductID), @class = "Delete", href = "JavaScript:void(0)" })),
- grid.Column("ProductName","产品名称"),
- grid.Column("QuantityPerUnit","每单位数量"),
- grid.Column("UnitPrice","单价"),
- grid.Column("UnitsInStock", "库存单位"),
- grid.Column("UnitsOnOrder","订单单位"),
- grid.Column("ReorderLevel","重新排序级别"),
- grid.Column("Discontinued","已停产") ) ) %>
- </div></asp:Content>
Razor:
代码
- @model List<WebGridRazor.Models.Products> @{ View.Title = "产品列表"; } <p>
- <h2>产品列表</h2> <div id="grid"> @{
- var grid = new WebGrid(source: Model, defaultSort: "ProductName", rowsPerPage: 3); } @grid.GetHtml(
- tableStyle: "grid",
- headerStyle: "head",
- alternatingRowStyle: "alt",
- columns: grid.Columns(
- grid.Column(format: (item) => Html.ActionLink("Edit", "Edit", new { id = item.ProductID })),
- grid.Column(format: (item) => Html.ActionLink("Delete", "Delete", null, new { onclick = string.Format("deleteRecord('Product', '{0}')", item.ProductID), @class = "Delete", href = "JavaScript:void(0)" })),
- grid.Column("ProductName","产品名称"),
- grid.Column("QuantityPerUnit","每单位数量"),
- grid.Column("UnitPrice","单价"),
- grid.Column("UnitsInStock", "库存单位"),
- grid.Column("UnitsOnOrder","订单单位"),
- grid.Column("ReorderLevel","重新排序级别"),
- grid.Column("Discontinued","已停产") ) )
- </div> </p>
Razor去掉了那些模板页的代码,使代码看起来更整洁。比较喜欢Razor。
总结:本文很简单,介绍了一下ASP.NET MVC 3 Beta中新功能WebGrid,由于这种方式WebGrid是在内存中分页和排序的,所以不适合大数据量。
源码下载地址:http://down.51cto.com/data/134994
原文标题:ASP.NET MVC 3 Beta之WebGrid的使用
链接:http://www.cnblogs.com/zhuqil/archive/2010/10/17/ASP-NET-MVC-3-Beta-WebGrid.html
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