public class Attachment
    {

        #region Properties
        /// <summary>
        /// sets or gets identifier for attachment
        /// </summary>
        public virtual Guid Id { get; set; }
        /// <summary>
        /// sets or gets name for attachment
        /// </summary>
        public virtual string FileName { get; set; }
        /// <summary>
        /// sets or gets type of attachment
        /// </summary>
        public virtual string ContentType { get; set; }
        /// <summary>
        /// sets or gets size of attachment
        /// </summary>
        public virtual long Size { get; set; }
        /// <summary>
        /// sets or gets Extention of attachment
        /// </summary>
        public virtual string Extensions { get; set; }
        /// <summary>
        /// sets or gets Creation Date
        /// </summary>
        public virtual DateTime CreatedOn { get; set; }
        /// <summary>
        /// gets or sets counts of download this file
        /// </summary>
        public virtual long DownloadsCount { get; set; }

        public virtual DateTime ModifiedOn { get; set; }
        #endregion

        #region NavigationProperties
        /// <summary>
        /// sets or gets identifier of attachment's owner
        /// </summary>
        public virtual long OwnerId { get; set; }
        /// <summary>
        /// sets or gets identifier of attachment's owner
        /// </summary>
        public virtual User Owner { get; set; }
        #endregion
    }

TimeSpan.FromMinutes(0)

SELECT [Extent1].[Id] AS [Id],
       [Extent1].[Body] AS [Body],
       [Extent1].[ReplyId] AS [ReplyId],
       [Extent2].[Id] AS [Id1],
       [Extent2].[Body] AS [Body1],
       [Extent2].[ReplyId] AS [ReplyId1]
FROM   [dbo].[BlogComments] AS [Extent1]
       LEFT OUTER JOIN
       [dbo].[BlogComments] AS [Extent2]
       ON [Extent1].[ReplyId] = [Extent2].[Id]
WHERE  ([Extent1].[Id] >= 2)
       AND (([Extent1].[ReplyId] = [Extent1].[ReplyId])
            OR (([Extent1].[ReplyId] IS NULL)
                AND ([Extent1].[ReplyId] IS NULL))
            OR ([Extent2].[Id] IS NULL));

  DropColumn("dbo.Judges", "Photo");
  Sql("alter table [dbo].[Judges] add [PhotoTemp] varbinary(max) FILESTREAM not null");
  RenameColumn("dbo.Judges", "PhotoTemp", "Photo");
  Sql("alter table [dbo].[Judges] add constraint [DF_Judges_Photo] default(0x) for [Photo]");

                 ioc.For<IIdentity>()
                     .Use(
                         () =>
                             (HttpContext.Current != null && HttpContext.Current.User != null)
                                 ? HttpContext.Current.User.Identity
                                 : null);