In order to use ASP.NET AJAX inside an EPiServer custom property you have to have a ScriptManager present. Here's an example of how to add one programmatically.

The PropertyControlClassFactory class makes it easy to map EPiServer properties to custom property controls to modify how properties are rendered.

The PropertyUserControlBase class in Template Foundation has been updated with two new events called PropertyLoad and PropertySave, making it easier to load and save the property value.

The PropertyUserControlBase class in Template Foundation has been updated with two new events called PropertyLoad and PropertySave, making it easier to load and save the property value.

The PropertyUserControlBase class in Template Foundation has been updated with two new events called PropertyLoad and PropertySave, making it easier to load and save the property value.