In December 2009, we introduced the Telerik UI controls into the product. The intention was to make it easier for developers to build UI components and to maintain some level of consistency. Some third-party module developers adopted these controls, while others continued to do their own thing. Module development has changed drastically since 2009. Developers are leveraging light weight, client-side frameworks and handling business logic with WebAPIs. The reality is that the Telerik components are adding too much overhead to the core product that is no longer necessary. With Telerik removed, we expect to see significant performance improvements with memory utilization, application start time and overall page size. Removing Telerik has been a long journey, but I’m pleased to announce that this journey is almost over.
Version 9.1 will be released at the end of April. This release will have significant changes related to the removal of Telerik and completing the UI overhaul that we introduced in Version 9.0. Some of these changes may be breaking changes for your site. The information below is to help you understand what changes have been made and how they may impact your site.
Removal of Legacy Modules
Version 9.0 introduced a completely new UI for admin and host functionality. The new UI doesn’t use any of our legacy webforms controls. We did leave many of the old admin and host modules in place to help users with the transition. However, those modules will be removed for new installs and upgrades with 9.1. Again, this change is intended to help with the overall performance of the product and also improve the overall user experience. With 9.1, you will no longer be able to access old functionality by navigating to /Admin or /Host. Those pages and modules within those pages are being removed.
Visit the 9.1 Extensions Removal page in the DNN Documentation Center to learn more about these changes.
Removal of Telerik
We have been working to remove Telerik since June 2014. This shouldn’t surprise anyone that has attended a DNN conference or that follows the community blog. We do know that several third-party modules have continued to develop using the Telerik controls. We hope that vendors have already taken steps to move away from Telerik and will be able to provide you with new version around the release of 9.1
The impact of removing Telerik will vary with each site. It will depend on what third-party modules are on your site and any custom modules you have built. If you have built anything using the Telerik controls then you should start testing and preparing for version 9.1 now. We have tried to ensure that sites will have minimal impact during upgrades, but it is important that you understand how Telerik will be distributed. Once we build a suitable replacement for the old Digital Asset Management module, Telerik will no longer be distributed in any fashion. I expect this will happen later this year. Visit the
9.1 Telerik Removal page in the DNN Documentation Center to learn more about these changes.