/// <summary>
    /// Represents Activity Log record
    /// </summary>
    public class ActivityLog
    {
        #region Ctor
        /// <summary>
        /// Create one instance of <see cref="ActivityLog"/>
        /// </summary>
        public ActivityLog()
        {
            Id = SequentialGuidGenerator.NewSequentialGuid();
            OperatedOn=DateTime.Now;
        }
        #endregion

        #region Properties
        /// <summary>
        /// gets or sets identifier 
        /// </summary>
        public virtual Guid Id { get; set; }
        /// <summary>
        /// gets or sets the comment of this activity
        /// </summary>
        public virtual string Comment { get; set; }
        /// <summary>
        /// gets or sets the date that this activity was done
        /// </summary>
        public virtual DateTime OperatedOn { get; set; }
        /// <summary>
        /// gets or sets the page url . 
        /// </summary>
        public virtual string Url { get; set; }
        /// <summary>
        /// gets or sets the title of page if Url is Not null
        /// </summary>
        public virtual string Title { get; set; }
        /// <summary>
        /// gets or sets user agent information
        /// </summary>
        public virtual string Agent { get; set; }
        /// <summary>
        /// gets or sets user's ip address
        /// </summary>
        public virtual string OperantIp { get; set; }
        #endregion

        #region NavigationProperties
        /// <summary>
        /// gets or sets the type of this activity
        /// </summary>
        public virtual ActivityLogType Type{ get; set; }
        /// <summary>
        /// gets or sets the  type's id of this activity
        /// </summary>
        public virtual Guid TypeId { get; set; }
        /// <summary>
        /// gets or sets User that done this activity
        /// </summary>
        public virtual User Operant { get; set; }
        /// <summary>
        /// gets or sets Id of User that done this activity
        /// </summary>
        public virtual long OperantId { get; set; }
        #endregion
    }

   /// <summary>
    /// Represents Activity Log Type Record
    /// </summary>
    public class ActivityLogType
    {
        #region Ctor
        /// <summary>
        /// Create one Instance of <see cref="ActivityLogType"/>
        /// </summary>
        public ActivityLogType()
        {
            Id = SequentialGuidGenerator.NewSequentialGuid();
        }
        #endregion

        #region Properties
        /// <summary>
        /// gets or sets identifier 
        /// </summary>
        public virtual Guid Id { get; set; }
        /// <summary>
        /// gets or sets the system name
        /// </summary>
        public virtual string Name{ get; set; }
        /// <summary>
        /// gets or sets the display name
        /// </summary>
        public virtual string DisplayName { get; set; }
        /// <summary>
        /// gets or sets the description 
        /// </summary>
        public virtual string Description { get; set; }
        /// <summary>
        /// indicate this log type is enable for logging
        /// </summary>
        public virtual bool IsEnabled { get; set; }
        #endregion
    }

 public class Observation
    {
        #region Ctor
        /// <summary>
        /// create one instance of <see cref="Observation"/>
        /// </summary>
        public Observation()
        {
            LastObservedOn = DateTime.Now;
            Id = SequentialGuidGenerator.NewSequentialGuid();
        }
        #endregion

        #region Properties
        public virtual Guid Id { get; set; }
        /// <summary>
        /// gets or sets datetime of last visit 
        /// </summary>
        public virtual DateTime LastObservedOn { get; set; }
        /// <summary>
        /// gets or sets Id Of section That user is  observing the entity
        /// </summary>
        public virtual string SectionId { get; set; }
        /// <summary>
        /// gets or sets  section That user is  observing in it
        /// </summary>
        public virtual string Section { get; set; }
        #endregion

        #region NavigationProperites
        /// <summary>
        /// gets or sets user that observed the entity
        /// </summary>
        public virtual User Observer { get; set; }
        /// <summary>
        /// gets or sets identifier of user that observed the entity
        /// </summary>
        public virtual long ObserverId { get; set; }
        #endregion
    }

مدل صفحات داینامیک

/// <summary>
    /// represents one custom page
    /// </summary>
    public class Page : BaseEntity<long, long>
    {
        #region Properties
        /// <summary>
        /// gets or sets the blog pot body
        /// </summary>
        public virtual string Body { get; set; }
        /// <summary>
        /// gets or sets the content title
        /// </summary>
        public virtual string Title { get; set; }
        /// <summary>
        /// gets or sets value  indicating Custom Slug
        /// </summary>
        public virtual string SlugUrl { get; set; }
        /// <summary>
        /// gets or sets meta title for seo
        /// </summary>
        public virtual string MetaTitle { get; set; }
        /// <summary>
        /// gets or sets meta keywords for seo
        /// </summary>
        public virtual string MetaKeywords { get; set; }
        /// <summary>
        /// gets or sets meta description of the content
        /// </summary>
        public virtual string MetaDescription { get; set; }
        /// <summary>
        /// gets or sets 
        /// </summary>
        public virtual string FocusKeyword { get; set; }
        /// <summary>
        /// gets or sets value indicating whether the content use CanonicalUrl
        /// </summary>
        public virtual bool UseCanonicalUrl { get; set; }
        /// <summary>
        /// gets or sets CanonicalUrl That the Post Point to it
        /// </summary>
        public virtual string CanonicalUrl { get; set; }
        /// <summary>
        /// gets or sets value indicating whether the content user no Follow for Seo
        /// </summary>
        public virtual bool UseNoFollow { get; set; }
        /// <summary>
        /// gets or sets value indicating whether the content user no Index for Seo
        /// </summary>
        public virtual bool UseNoIndex { get; set; }
        /// <summary>
        /// gets or sets value indicating whether the content in sitemap
        /// </summary>
        public virtual bool IsInSitemap { get; set; }
        /// <summary>
        /// gets or sets title for snippet
        /// </summary>
        public string SocialSnippetTitle { get; set; }
        /// <summary>
        /// gets or sets description for snippet
        /// </summary>
        public string SocialSnippetDescription { get; set; }
        /// <summary>
        /// gets or sets section's type that this page show on
        /// </summary>
        public virtual ShowPageSection Section { get; set; }
        /// <summary>
        /// indicate this page has not any body
        /// </summary>
        public virtual bool IsCategory { get; set; }
        /// <summary>
        /// gets or sets order for display forum
        /// </summary>
        public virtual int DisplayOrder { get; set; }

        #endregion

        #region NavigationProeprties
        /// <summary>
        /// gets or sets Parent of this page
        /// </summary>
        public virtual Page Parent { get; set; }
        /// <summary>
        /// gets or sets parent'id of this page
        /// </summary>
        public virtual long? ParentId { get; set; }
        /// <summary>
        /// get or set collection of page that they are children of this page
        /// </summary>
        public virtual ICollection<Page> Children { get; set; }
        #endregion
    }

  public enum ShowPageSection
    {
        Menu,
        Footer,
        SideBar
    }

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