jQuery EasyUI DataGrid在MVC中的运用-基本属性并实现分页

※ datagrid的基本属性和方法
※ datagrid分页在前后台的实现

最终效果：
与视图显示对应的view model

public class Book

        public string ItemId { get; set; }

        public string ProductId { get; set; }

        public decimal ListPrice { get; set; }

        public decimal UnitCost { get; set; }

        public string Attr1 { get; set; }

        public Int16 Status { get; set; }

  模拟一个从数据库拿数据，并考虑分页的服务层方法

□ 与分页有关的类

public class PageParam

        public int PageSize { get; set; }

        public int PageIndex { get; set; }

在实际项目中，可以把以上作为一个基类，把各个领域的各种搜索条件封装成继承PageParam的子类。

□ 分页服务层方法

using System.Linq;
using DataGridInMvc.Models;
using System.Collections.Generic;
using Microsoft.Ajax.Utilities;

namespace DataGridInMvc.Helper
{
    public class BookService
    {
        public IEnumerable<Book> LoadPageBookData(PageParam param, out int total)
        {
            //创建Book的集合
            var books = new List<Book>();
            for (int i = 0; i < 30; i++)
            {
                books.Add(new Book()
                {
                    ItemId = "EST-" + i,
                    ProductId = "AV-SB-" + i,
                    ListPrice = (i + 5) * 10m,
                    UnitCost = (i + 2) * 10m,
                    Attr1 = "Attr" + i,
                    Status = (short)0
                });
            }

total = books.Count();
            var result = books.OrderBy(b => b.ItemId)
                .Skip(param.PageSize*(param.PageIndex - 1))
                .Take(param.PageSize);
            return result;
        }
    }
}

Controller有显示页面和响应前台datagrid请求的Action方法

using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Web;
using System.Web.Mvc;
using DataGridInMvc.Helper;
using DataGridInMvc.Models;

namespace DataGridInMvc.Controllers
{
public class HomeController : Controller
{

public ActionResult Index()
{
return View();
}

public ActionResult GetData()
        {
            //接收datagrid传来的参数
            int pageIndex = int.Parse(Request["page"]);
            int pageSize = int.Parse(Request["rows"]);

//构建得到分页数据方法所需的参数
            var temp = new PageParam()
            {
                PageIndex = pageIndex,
                PageSize = pageSize
            };

//分页数据方法的输出参数
int totalNum = 0;

var service = new BookService();
var books = service.LoadPageBookData(temp, out totalNum);

var result = from book in books
select new {book.ItemId, book.ProductId, book.ListPrice, book.UnitCost, book.Status, book.Attr1};

//total,rows是前台datagrid所需要的
var jsonResult = new {total = totalNum, rows = result};

//把json对象序列化成字符串
            string str = JsonSerializeHelper.SerializeToJson(jsonResult);
            return Content(str);
        }
    }
}

□ 这里需要把json对象序列化成string，使用Newtonsoft组件是不错的选择。把序列化和反序列化封装成类。

using System;
using Newtonsoft.Json;

namespace DataGridInMvc.Helper
{
public static class JsonSerializeHelper
{
/// <summary>
/// 把object对象序列化成json字符串
/// </summary>
/// <param name="obj">序列话的实例</param>
/// <returns>序列化json字符串</returns>
public static string SerializeToJson(object obj)
{
return JsonConvert.SerializeObject(obj);
}

/// <summary>
/// 把json字符串反序列化成Object对象
/// </summary>
/// <param name="json">json字符串</param>
/// <returns>对象实例</returns>
public static Object DeserializeFromJson(string json)
{
return JsonConvert.DeserializeObject(json);
}

/// <summary>
/// 把json字符串反序列化成泛型T
/// </summary>
/// <typeparam name="T">泛型</typeparam>
/// <param name="json">json字符串</param>
/// <returns>泛型T</returns>
public static T DeserializeFromJson<T>(string json)
{
return JsonConvert.DeserializeObject<T>(json);
}
}
}

视图