ASP.NET MVC5网站开发之业务逻辑层的架构和基本功能(四)_实用技巧_

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Data.Entity; namespace Ninesky.Core { public class NineskyContext:DbContext { public NineskyContext():base("DefaultConnection") { Database.SetInitializer(new CreateDatabaseIfNotExists()); } } } 

using System.Runtime.Remoting.Messaging; namespace Ninesky.Core { /// 
 /// 数据上下文工厂 /// 
 public class ContextFactory { /// 
 /// 获取当前线程的数据上下文 /// 
 /// 数据上下文 public static NineskyContext CurrentContext() { NineskyContext _nContext = CallContext.GetData("NineskyContext") as NineskyContext; if (_nContext == null) { _nContext = new NineskyContext(); CallContext.SetData("NineskyContext", _nContext); } return _nContext; } } } 

namespace Ninesky.Core.Types { /// 
 /// /// 
 public class Response { /// 
 /// 返回代码. 0-失败，1-成功，其他-具体见方法返回值说明 /// 
 public int Code { get; set; } /// 
 /// 返回消息 /// 
 public string Message { get; set; } /// 
 /// 返回数据 /// 
 public dynamic Data { get; set; } public Response() { Code = 0; } } } 

using System.Collections.Generic; namespace Ninesky.Core.Types { public class Paging { /// 
 /// 当前页。从1计数 /// 
 public int PageIndex { get; set; } /// 
 /// 每页记录数。默认20 /// 
 public int PageSize { get; set; } /// 
 /// 总记录数 /// 
 public int TotalNumber;/// 
 /// 当前页记录列表 /// 
 public List Items { get; set; } public Paging() { PageIndex = 1; PageSize = 20; } } } 

using Ninesky.Core.Types; using Ninesky.DataLibrary; using System.Data.Entity; using System.Linq; namespace Ninesky.Core { /// 
 /// 管理类的基类 /// 
 /// 模型类 public abstract class BaseManager where T :class { /// 
 /// 数据仓储类 /// 
 protected Repository Repository; /// 
 /// 默认构造函数 /// 
 public BaseManager():this(ContextFactory.CurrentContext()) { } /// 
 /// 构造函数 /// 
 /// 数据上下文 public BaseManager(DbContext dbContext){ Repository = new Repository(dbContext); } /// 
 /// 添加 /// 
 /// 实体数据 /// 成功时属性【Data】为添加后的数据实体 public virtual Response Add(T entity) { Response _response = new Response(); if(Repository.Add(entity)>0) { _response.Code = 1; _response.Message = "添加数据成功！"; _response.Data = entity; } else { _response.Code = 0; _response.Message = "添加数据失败！"; } return _response; } /// 
 /// 更新 /// 
 /// 实体数据 /// 成功时属性【Data】为更新后的数据实体 public virtual Response Update(T entity) { Response _response = new Response(); if (Repository.Update(entity) > 0) { _response.Code = 1; _response.Message = "更新数据成功！"; _response.Data = entity; } else { _response.Code = 0; _response.Message = "更新数据失败！"; } return _response; } /// 
 /// 删除 /// 
 /// 主键 /// Code：0-删除失败；1-删除陈功；10-记录不存在 public virtual Response Delete(int ID) { Response _response = new Response(); var _entity = Find(ID); if (_entity == null) { _response.Code = 10; _response.Message = "记录不存在！"; } else { if (Repository.Delete(_entity) > 0) { _response.Code = 1; _response.Message = "删除数据成功！"; } else { _response.Code = 0; _response.Message = "删除数据失败！"; } } return _response; } /// 
 /// 查找实体 /// 
 /// 主键 /// 实体 public virtual T Find(int ID) { return Repository.Find(ID); } /// 
 /// 查找数据列表-【所有数据】 /// 
 /// 所有数据 public IQueryable FindList() { return Repository.FindList(); } /// 
 /// 查找分页数据 /// 
 /// 分页数据 /// 分页数据 public Paging FindPageList(Paging paging) { paging.Items = Repository.FindPageList(paging.PageSize, paging.PageIndex, out paging.TotalNumber).ToList(); return paging; } /// 
 /// 总记录数 /// 
 /// 总记录数 public virtual int Count() { return Repository.Count(); } } }