public void Delete(Product product)
{
if (Context.Entry(product).State == EntityState.Detached)
{
Dbset.Attach(product);
}
Dbset.Remove(product);
}
public void Update(Product product)
{
//var x = Context.Entry(product).State;
Dbset.Attach(product);
//var y = Context.Entry(product).State;
Context.Entry(product).State = EntityState.Modified;
//var z = Context.Entry(product).State;
}
/// <summary>
/// 修改单条数据
/// </summary>
/// <param name="entity">TEntity实体</param>
/// <exception cref="System.ArgumentNullException">entity</exception>
public virtual void Update(TEntity entity)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
Dbset.Attach(entity);
_dataContext.Entry(entity).State = EntityState.Modified;
}
/// <summary>
/// Updates the specified where.
/// </summary>
/// <param name="where">The where.</param>
/// <param name="action">The action.</param>
public virtual void Update(Expression <Func <TEntity, bool> > @where, Action <TEntity> action)
{
var objects = Dbset.Where(where);
//objects.ForEach(entity =>
//{
// Dbset.Attach(entity);
// var entityEntry = _dataContext.Entry(entity);
// action(entity);
// entityEntry.State = EntityState.Modified;
//});
foreach (TEntity entity in objects)
{
Dbset.Attach(entity);
var entityEntry = _dataContext.Entry(entity);
action(entity);
entityEntry.State = EntityState.Modified;
}
}
