Based on a recent experience and a lot of wasted time, this post details why you really should set the validation group on validation controls that you add to your custom Umbraco user controls.

I have recently needed to use the Umbraco datePicker control in a usercontrol I was creating however I kept getting presented with an “Unknown server tag ‘umbraco:datePicker” exception. After some digging around in the Umbraco Source it is confusingly not in the assembly I would have expected but it was in fact located in the [...]

There was a time not so long ago, when website developers were treated with almost as much reverence as pilots and surgeons. After all, without a website, your business was just not a player, non-existent, invisible to the world. No one had any idea as to what they did, or how they did it, just [...]

Creating a plain-text version of HTML that is suitable to be sent out as the text part of a multi-part email. Using C# and XSLT I have developed a working solution to the problem with help from a third party markdown XSLT file.

Some months back Tim Geyssens was kind enough to send me the source for his MailEngine addition to Umbraco before he released it on his blog. I made some customisations to the source to allow users to select templates and changed the filtering options slightly but other than that it worked jut fine for what [...]

A great time saving shortcut in Visual Studio to implement an Abstract Class or Interface in Visual Studio. Using the shortcut will populate all of the abstract class method signatures for you.

The package essentially adds a new context menu item to the Umbraco CMS dashboard to allow media items to be sorted alphanumerically. The Media Sorter is something I originally developed to save myself and my clients time when working with large media repositories in Umbraco.

I have just finished another upgrade from umbraco 3.06 to v4.0.2.1 and hit a snag whereby whenever a user attempted to add a new media item after the upgrade they were presented with the exception: “ERROR CREATING CONTROL FOR NODETYPE: Media”

I have recently been working on another package for the Umbraco CMS. During the course of packaging the extension I hit a problem with the existing package actions that were available via the core and the PackageActionContrib project.

When Umbraco 4 was first released I had issues with 2 of the upgrades from v3 in that the templates disappeared from the UI and clicking on any of the DocumentTypes resulted in an exception taking the form of “No node exists with id ’1040′”. Today I was working on the site again and it [...]