//增删改查 分页
T AddEntity(T t);
bool DeleteEntity(T t);
bool UpdateEntity(T t);
IQueryable<T> LoadEntities(Expression<Func<T,bool>> whereLambda);
IQueryable<T> LoadPageEntitis<s>(int pageIndex, int pageSize, out int toalCount,
Expression<Func<T, bool>> whereLambda,
Expression<Func<T,s>> orderByLambda,
bool IsAsc); 

1     public interface IDeviceInfoDal : IBaseDao<SYS_DEVICE_TABLE>
2     {
3
4     }

 1     public class BaseDal<T>
 2         where T:class,new()
 3     {
 4         MLedSystemEntities dbContext = DBContxtFactory.CreateDbContext();
 5         public T AddEntity(T t)
 6         {
 7             dbContext.Entry<T>(t).State = EntityState.Added;
 8             //dbContext.SaveChanges();
 9             return t;
10         }
11
12         public bool DeleteEntity(T t)
13         {
14             dbContext.Entry<T>(t).State = EntityState.Deleted;
15             return true;//dbContext.SaveChanges() > 0;
16         }
17
18         public bool UpdateEntity(T t)
19         {
20             dbContext.Entry<T>(t).State = EntityState.Modified;
21             return true;//dbContext.SaveChanges() > 0;
22         }
23
24         public IQueryable<T> LoadEntities(System.Linq.Expressions.Expression<Func<T, bool>> whereLambda)
25         {
26             return dbContext.Set<T>().Where(whereLambda);
27         }
28
29         public IQueryable<T> LoadPageEntitis<s>(int pageIndex, int pageSize, out int toalCount, System.Linq.Expressions.Expression<Func<T, bool>> whereLambda, System.Linq.Expressions.Expression<Func<T,s>> orderByLambda, bool IsAsc)
30         {
31             var res = dbContext.Set<T>().Where(whereLambda);
32             toalCount = res.Count();
33             IQueryable<T> temp;
34             if (IsAsc)
35             {
36                 temp = res.OrderBy<T, s>(orderByLambda).Skip((pageIndex - 1) * pageSize).Take(pageSize);
37             }
38             else
39             {
40                 temp = res.OrderByDescending<T, s>(orderByLambda).Skip((pageIndex - 1) * pageSize).Take(pageSize);
41             }
42             return temp;
43         }
44
45     }

    public class DeviceTypeInfoDal : BaseDal<SYS_DEVICE_TYPE_TABLE>, IDeviceTypeInfoDal{}

    public class DeviceInfoDal :BaseDal<SYS_DEVICE_TABLE>, IDeviceInfoDal{}

        IDeviceInfoDal DeviceInfoDal { get; set; }IDeviceTypeInfoDal DeviceTypeInfoDal { get; set; }bool SaveChange();

 1 MLedSystemEntities dbContext {
 2             get {
 3                 return DBContxtFactory.CreateDbContext();
 4 //这里需要保证EF上下文唯一，也就是线程安全
 5             }
 6         }
 7         public IDeviceInfoDal DeviceInfoDal
 8         {
 9             get
10             {
11                  //return DBSessionFactory.CreateDeviceInfoDal();
12                 return AbstractFactory.CreateDeviceInfoDal();
13 　　　　　　　　//这里使用抽象工厂创建对象实例-》目的：降低耦合度
14 } set { DeviceInfoDal = value; } } public IDeviceTypeInfoDal DeviceTypeInfoDal {
15 get {
16 //return DBSessionFactory.CreateDeviceTypeInfoDal();
17 return AbstractFactory.CreateDeviceTypeInfoDal();
18 //这里使用抽象工厂创建对象实例-》目的：降低耦合度
19 } set { DeviceTypeInfoDal = value; } } public bool SaveChange() { return dbContext.SaveChanges()>0; }

<script type="text/javascript">
$(function () {
onAsynLoad(3,5);
});
function onAsynLoad(pageindex, pagesize) {
$.getJSON(
'@Url.Action("AsynLoad","DeviceInfo")',
{ pageIndex: pageindex, pageSize: pagesize },//传入参数
function (temp) {//temp为返回的结果
var list = $('#list');
list.empty();
$.each(temp.list1, function (index, item) {
list.append('<tr><td>' +
item.id + '</td><td>' +
item.Name + '</td><td>' +
item.Ip + '</td><td>' +
item.Port + '<a href="@Url.Action("Delete","DeviceInfo")?id=' + item.id + '">删除</a></td></tr>')
});
list.append('<tr><td colspan=4>总记录数：' + temp.tolCount + '</td></tr>');
}
);
}
</script>

 1 public ActionResult AsynLoad(int pageIndex, int pageSize)
 2         {
 3             //int pageIndex=1;
 4             //int pageSize=4;
 5             int totalCount=0;
 6             var result = DeviceInfoService.LoadPageEntitis<int>(pageIndex, pageSize, out totalCount, u => true, u => u.DEVID, true).ToList();
 7             List<DeviceInfoViewModel> listDeviceInfoViewModel=new List<DeviceInfoViewModel>();
 8             foreach(var res in result){
 9                 DeviceInfoViewModel item=new DeviceInfoViewModel();
10                 item.id=res.DEVID;
11                 item.Name=res.DEVNAME;
12                 item.Ip=res.DEVIP;
13                 item.Port=res.DEVPORT;
14                 listDeviceInfoViewModel.Add(item);
15             }
16             var temp = new
17             {
18                 list1 = listDeviceInfoViewModel,
19                 tolCount = totalCount.ToString()
20             };
21             return Json(temp,JsonRequestBehavior.AllowGet);
22         }