/// <summary>
/// 修改实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public virtual int Update(T entity)
{
using (var dbContext = new DcContext())
{
if (!dbContext.Set <T>().Local.Contains(entity))
{
dbContext.Set <T>().Attach(entity);
}
entity.UpdateTime = DateTime.Now;
dbContext.Entry(entity).State = EntityState.Modified;
return(dbContext.SaveChanges());
}
}
/// <summary>
/// 删除实体
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public virtual int Delete(T entity)
{
using (var dbContext = new DcContext())
{
if (!dbContext.Set <T>().Local.Contains(entity))
{
dbContext.Set <T>().Attach(entity);
}
(entity as ISoftDelete).IsDeleted = true;
dbContext.Entry <T>(entity).State = EntityState.Modified;
return(dbContext.SaveChanges());
}
}
/// <summary>
/// 批量删除实体 by some where
/// </summary>
/// <param name="entity"></param>
/// <returns></returns>
public virtual int Deletes(Expression <Func <T, bool> > where)
{
using (var dbContext = new DcContext())
{
foreach (var entity in dbContext.Set <T>().Where(where))
{
if (entity is ISoftDelete)
{
(entity as ISoftDelete).IsDeleted = true;
dbContext.Entry <T>(entity).State = EntityState.Modified;
}
else
{
dbContext.Set <T>().Remove(entity);
}
}
return(dbContext.SaveChanges());
}
}