I can't find a lot in Tridion Docs regarding GUI extensions. Are there any known issues migrating from 2013 SP1 to Web 8.5? Thank you in adavance

2 Answers 2


There is a very extensive topic in the SDL Web 8.5 documentation regarding GUI extensions: http://docs.sdl.com/LiveContent/content/en-US/SDL%20Web-v5/GUID-44562CE1-5D81-4E64-B65B-C8BFA0BAA53D, including a SDL Web 8.5 GUI API reference.

With regards to API changes, there are the following topics:


Yes, some of the Tridion Controls namespaces has been changed in SDL Web 8.5 like below,

so, in C# we need to recompile the UI Extension dll's

using Tridion.Web.UI.Core.Controls; (Used to be Tridion.Controls earlier)

using Tridion.Web.UI.Editors.SiteEdit.Pages.PropertiesBox;

as well as in the UI Extension javascript namespace references,

  1. Tridion.Web.UI.Editors.SiteEdit.Pages.PropertiesBox.DrillDownListPropertyPanel

  2. initialize event has been renamed to _initialize

So, recompilation and namespace adjustments are required to get the UI Extensions working with SDL Web 8.5

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