/// <summary>
/// 创建实体对象
/// </summary>
/// <param name="reader">数据流</param>
/// <param name="columnNames">查询的列</param>
/// <returns>实体对象</returns>
private TEntity CreateEntity(IDataReader reader, string[] columnNames)
{
return(EntityAccessor.CreateEntity(base.TableMapper, reader, columnNames) as TEntity);
}