The lost EPiServer.TypedPageBase<PageData>

When CMS 5 R2 SP2 was in RC, it included a type to simplify using your own PageData types when building page templates. Before the release we decided to remove this class for two reasons: naming and whether or not it is OK to hide the CurrentPage property of PageBase (I think it is, btw).

What should you do if you need this type in your EPiServer project?

For those using the PageTypeBuilder project there is a replacement that should be used instead, TemplatePageBase.

However, if you for some reason still want to use the original TypedPageBase here’s the code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using EPiServer.Core;
using EPiServer.Web.PageExtensions;

namespace EPiServer
{
    /// <summary>
    /// Page Template class for supporting strongly typed PageData objects with an arbitrary type <typeparamref name="TPageData"/>.
    /// </summary>
    /// <typeparam name="TPageData">The strongly typed PageData type.</typeparam>
    public class TypedPageBase<TPageData> : PageBase
        where TPageData : PageData, new()
    {
        /// <summary>
        /// Creates a new instance of <see cref="TypedPageBase"/> with a default set of features enabled.
        /// </summary>
        public TypedPageBase() : this(
            SiteRedirect.OptionFlag | 
            ContextMenu.OptionFlag | 
            PageStatistics.OptionFlag | 
            SaveCurrentPage.OptionFlag, 0) { }

        /// <summary>
        /// Creates a new instance of <see cref="TypedPageBase"/> where individual features can be enabled and disabled.
        /// </summary>
        /// <param name="enable">The bitmask for enabling certain features.</param>
        /// <param name="disable">The bitmask for disabling certain features.</param>
        public TypedPageBase(int enable, int disable) : base(enable, disable) { }

        private TPageData _currentPage;
        /// <summary>
        /// Gets a strongly typed PageData of type <typeparamref name="TPageData"/>.
        /// </summary>
        public virtual TPageData CurrentTypedPage
        {
            get
            {
                if (_currentPage == null)
                {
                    _currentPage = PageData.ShallowCopy<TPageData>(base.CurrentPage);
                }
                return _currentPage;
            }
        }
    }
}

In the latest version of Page Type Tool the corresponding generated code looks like this:

    /// <summary>
    /// A base class for page template implementations.
    /// </summary>
    /// <typeparam name="TPageData">A PageData class that will represent the content class for the page template.</typeparam>
    public class PageBase<TPageData> : EPiServer.PageBase
        where TPageData : EPiServer.Core.PageData, new ()
    {
        private TPageData _currentPage;
        /// <summary>
        /// Creates an instance of the PageBase type.
        /// </summary>
        public PageBase() : 
                this((EPiServer.Web.PageExtensions.SiteRedirect.OptionFlag 
                                | (EPiServer.Web.PageExtensions.ContextMenu.OptionFlag 
                                | (EPiServer.Web.PageExtensions.PageStatistics.OptionFlag | EPiServer.Web.PageExtensions.SaveCurrentPage.OptionFlag))), 0)
        {
        }
        /// <summary>
        /// Creates an instance of the PageBase type with specified page feature configuration.
        /// </summary>
        /// <param name="enable">The page options to enable.</param>
        /// <param name="disable">The page options to disable.</param>
        public PageBase(int enable, int disable) : 
                base(enable, disable)
        {
        }
        /// <summary>
        /// Gets page data for the current page.
        /// </summary>
        public new virtual TPageData CurrentPage
        {
            get
            {
                if ((this._currentPage == null))
                {
                    this._currentPage = EPiServer.Core.PageData.ShallowCopy<TPageData>(base.CurrentPage);
                }
                return this._currentPage;
            }
        }
    }

The most notable difference is the type name and that it hides the CurrentPage property implementation of the base class.

Aug 18, 2009

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