public class ServiceBase : IServiceBase
{protected DbContext Context { get; private set; } // 这个DbContext指向的是当前的Contextpublic ServiceBase(IEFContext eFContext){Context = eFContext.CreateDBContext();}public void Commit(){this.Context.SaveChanges(); // 直接保存就行了}public void Delete<T>(int Id) where T : class{T t = this.Find<T>(Id);if (t == null) throw new Exception("t is null");    // 如果是空就报错this.Context.Set<T>().Remove(t);    // 删除这个this.Commit();  // 删完提交}public void Delete<T>(T t) where T : class{if (t == null) throw new Exception("t is null");    // 如果是空就报错this.Context.Set<T>().Attach(t);    // 尊卑删除这个实体this.Context.Set<T>().Remove(t);    // 删除这个this.Commit();  // 删完提交}public void Delete<T>(IEnumerable<T> tList) where T : class{// 将要删除的实体标记上foreach (var t in tList){this.Context.Set<T>().Attach(t);    // 要删除这个实体}this.Context.Set<T>().RemoveRange(tList);    // 删除这个集合this.Commit();  // 删完提交}public T Find<T>(int id) where T : class{return this.Context.Set<T>().Find(id);}public T Insert<T>(T t) where T : class{this.Context.Set<T>().Add(t);   // 添加this.Commit();  // 提交return t;}public IEnumerable<T> Insert<T>(IEnumerable<T> tList) where T : class{this.Context.Set<T>().AddRange(tList);this.Commit();  //return tList;}public IQueryable<T> Query<T>(Expression<Func<T, bool>> funcWhere) where T : class{return this.Context.Set<T>().Where<T>(funcWhere);}public void Update<T>(T t) where T : class{if (t == null) throw new Exception("t is null");this.Context.Set<T>().Attach(t);    // 跟踪实体this.Context.Entry<T>(t).State = EntityState.Modified;  // 标记为已修改this.Commit();}public void Update<T>(IEnumerable<T> tList) where T : class{// 跟踪和标记更改foreach (var t in tList){this.Context.Set<T>().Attach(t);this.Context.Entry<T>(t).State = EntityState.Modified;}this.Commit();}public virtual void Dispose(){if (this.Context != null)this.Context.Dispose();}
}

接口：

public interface IServiceBase
{#region Query/// <summary>/// 根据id查询实体/// </summary>/// <param name="id"></param>/// <returns></returns>T Find<T>(int id) where T : class;/// <summary>/// 查询/// </summary>/// <typeparam name="T"></typeparam>/// <param name="funcWhere"></param>/// <returns></returns>IQueryable<T> Query<T>(Expression<Func<T, bool>> funcWhere) where T : class;#endregion#region Add/// <summary>/// 新增数据，即时Commit/// </summary>/// <param name="t"></param>/// <returns>返回带主键的实体</returns>T Insert<T>(T t) where T : class;/// <summary>/// 新增数据，即时Commit/// 多条sql 一个连接，事务插入/// </summary>/// <param name="tList"></param>IEnumerable<T> Insert<T>(IEnumerable<T> tList) where T : class;#endregion#region Update/// <summary>/// 更新数据，即时Commit/// </summary>/// <param name="t"></param>void Update<T>(T t) where T : class;/// <summary>/// 更新数据，即时Commit/// </summary>/// <param name="tList"></param>void Update<T>(IEnumerable<T> tList) where T : class;#endregion#region Delete/// <summary>/// 根据主键删除数据，即时Commit/// </summary>/// <param name="t"></param>void Delete<T>(int Id) where T : class;/// <su+mary>/// 删除数据，即时Commit/// </summary>/// <param name="t"></param>void Delete<T>(T t) where T : class;/// <summary>/// 删除数据，即时Commit/// </summary>/// <param name="tList"></param>void Delete<T>(IEnumerable<T> tList) where T : class;#endregion#region Other/// <summary>/// 立即保存全部修改/// 把增/删的savechange给放到这里，是为了保证事务的/// </summary>void Commit();#endregion
}