本次参考学习了
https://www.cnblogs.com/ymnets/p/3424309.htmlC
这个人的教程
但是由于时代久远，教程节奏快，版本的问题。对于初学者来说，很不友好。
正好我也要学习，所以自己重新写一下，顺带改一改其中的小bug。
系统目标：实现一个权限管理案例 用户—角色—权限
本节目标：DataGrid支持分页
1.修改前台代码
这部分一定要去参考easyui的中文文档，日月累计
$(function () {
$('#List').datagrid({
url: '/SysSample/GetList',
width: $(window).width() - 10,
methord: 'post',
height: $(window).height() - 35,
fitColumns: true,
sortName: 'Id',
sortOrder: 'desc',
idField: 'Id',
pageSize: 15,
pageList: [15, 20, 30, 40, 50],
pagination: true,
striped: true, //奇偶行是否区分
singleSelect: true,//单选模式
rownumbers: true,//行号
columns: [[
{ field: 'Id', title: 'ID', width: 80 },
{ field: 'Name', title: '名称', width: 120 },
{ field: 'Age', title: '年龄', width: 80, align: 'right' },
{ field: 'Bir', title: '生日', width: 80, align: 'right' },
{ field: 'Photo', title: '照片', width: 250 },
{ field: 'Note', title: '说明', width: 60, align: 'center' },
{ field: 'CreateTime', title: '创建时间', width: 60, align: 'center' }
]]
});
});
2.修改后台代码
原文章有一个步骤，
我们直接封装，分页
下述这些代码在我的前几章就有了
原文章在此才出现
所以说有点坑
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Apps.App.Common
{
public class GridPager
{
public int rows { get; set; }//每页行数
public int page { get; set; }//当前页是第几页
public string order { get; set; }//排序方式
public string sort { get; set; }//排序列
public int totalRows { get; set; }//总行数
public int totalPages //总页数
{
get
{
return (int)Math.Ceiling((float)totalRows / (float)rows);
}
}
}
}
修改这个函数
[HttpPost]
public JsonResult GetList(GridPager pager)
{
List<SysSampleModel> list = m_BLL.GetList(ref pager);
var json = new
{
total = pager.totalRows,
rows = (from r in list
select new SysSampleModel()
{
Id = r.Id,
Name = r.Name,
Age = r.Age,
Bir = r.Bir,
Photo = r.Photo,
Note = r.Note,
CreateTime = r.CreateTime,
}).ToArray()
};
return Json(json, JsonRequestBehavior.AllowGet);
}
说明一下，除了修改这部分代码，还要把对应的接口ISysSampleBLL对应的函数修改好
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Practices.Unity;
using App.Models;
using App.Common;
using App.Models.Sys;
using App.IBLL;
using App.IDAL;
namespace App.BLL
{
public class SysSampleBLL : ISysSampleBLL
{
DBContainer db = new DBContainer();
[Dependency]
public ISysSampleRepository Rep { get; set; }
/// <summary>
/// 获取列表
/// </summary>
/// <param name="pager">JQgrid分页</param>
/// <param name="queryStr">搜索条件</param>
/// <returns>列表</returns>
public List<SysSampleModel> GetList(ref GridPager pager)
{
IQueryable<SysSample> queryData = null;
queryData = Rep.GetList(db);
//排序
if (pager.order == "desc")
{
switch (pager.order)
{
case "CreateTime":
queryData = queryData.OrderByDescending(c => c.CreateTime);
break;
case "Name":
queryData = queryData.OrderByDescending(c => c.Name);
break;
default:
queryData = queryData.OrderByDescending(c => c.CreateTime);
break;
}
}
else
{
switch (pager.order)
{
case "CreateTime":
queryData = queryData.OrderBy(c => c.CreateTime);
break;
case "Name":
queryData = queryData.OrderBy(c => c.Name);
break;
default:
queryData = queryData.OrderBy(c => c.CreateTime);
break;
}
}
return CreateModelList(ref pager, ref queryData);
}
private List<SysSampleModel> CreateModelList(ref GridPager pager, ref IQueryable<SysSample> queryData)
{
pager.totalRows = queryData.Count();
if (pager.totalRows > 0)
{
if (pager.page <= 1)
{
queryData = queryData.Take(pager.rows);
}
else
{
queryData = queryData.Skip((pager.page - 1) * pager.rows).Take(pager.rows);
}
}
List<SysSampleModel> modelList = (from r in queryData
select new SysSampleModel
{
Id = r.Id,
Name = r.Name,
Age = r.Age,
Bir = r.Bir,
Photo = r.Photo,
Note = r.Note,
CreateTime = r.CreateTime,
}).ToList();
return modelList;
}
/// <summary>
/// 创建一个实体
/// </summary>
/// <param name="errors">持久的错误信息</param>
/// <param name="model">模型</param>
/// <returns>是否成功</returns>
public bool Create( SysSampleModel model)
{
try
{
SysSample entity = Rep.GetById(model.Id);
if (entity != null)
{
return false;
}
entity = new SysSample();
entity.Id = model.Id;
entity.Name = model.Name;
entity.Age = model.Age;
entity.Bir = model.Bir;
entity.Photo = model.Photo;
entity.Note = model.Note;
entity.CreateTime = model.CreateTime;
if (Rep.Create(entity) == 1)
{
return true;
}
else
{
return false;
}
}
catch (Exception ex)
{
//ExceptionHander.WriteException(ex);
return false;
}
}
/// <summary>
/// 删除一个实体
/// </summary>
/// <param name="errors">持久的错误信息</param>
/// <param name="id">id</param>
/// <returns>是否成功</returns>
public bool Delete(string id)
{
try
{
if (Rep.Delete(id) == 1)
{
return true;
}
else
{
return false;
}
}
catch (Exception ex)
{
return false;
}
}
/// <summary>
/// 修改一个实体
/// </summary>
/// <param name="errors">持久的错误信息</param>
/// <param name="model">模型</param>
/// <returns>是否成功</returns>
public bool Edit(SysSampleModel model)
{
try
{
SysSample entity = Rep.GetById(model.Id);
if (entity == null)
{
return false;
}
entity.Name = model.Name;
entity.Age = model.Age;
entity.Bir = model.Bir;
entity.Photo = model.Photo;
entity.Note = model.Note;
if (Rep.Edit(entity) == 1)
{
return true;
}
else
{
return false;
}
}
catch (Exception ex)
{
//ExceptionHander.WriteException(ex);
return false;
}
}
/// <summary>
/// 判断是否存在实体
/// </summary>
/// <param name="id">主键ID</param>
/// <returns>是否存在</returns>
public bool IsExists(string id)
{
if (db.SysSample.SingleOrDefault(a => a.Id == id) != null)
{
return true;
}
return false;
}
/// <summary>
/// 根据ID获得一个实体
/// </summary>
/// <param name="id">id</param>
/// <returns>实体</returns>
public SysSampleModel GetById(string id)
{
if (IsExist(id))
{
SysSample entity = Rep.GetById(id);
SysSampleModel model = new SysSampleModel();
model.Id = entity.Id;
model.Name = entity.Name;
model.Age = entity.Age;
model.Bir = entity.Bir;
model.Photo = entity.Photo;
model.Note = entity.Note;
model.CreateTime = entity.CreateTime;
return model;
}
else
{
return new SysSampleModel();
}
}
/// <summary>
/// 判断一个实体是否存在
/// </summary>
/// <param name="id">id</param>
/// <returns>是否存在 true or false</returns>
public bool IsExist(string id)
{
return Rep.IsExist(id);
}
}
}
SysSampleBLL
好了好了又改完了我们来运行一下
3.总结
突然发现第五章的内容没有发出去，，
嘻嘻嘻
一会去瞅瞅