In previous versions of EPiServer custom validation was normally achieved in one of two ways. You could either create a custom property or hook into a DataFactory event.
Both approaches had their disadvantages and advantages. However in EPiServer 7 a new way of validation has been introduced, namely the EPiServer.Validation.IValidate<T> interface (thanks to Johan Bjornfot for the tip!).
After my previous post about comparing Comparing PageTypeBuilder and EPiServer 7 Preview typed pages I found out that EPiServer 7 Preview now also supports standard .net validation attributes too.
I am sure you have had requirements that users can only enter numbers that are between 1 and 10, strings that are only 10 characters long or postcodes. In previous versions these all required custom properties but now these are all covered by using the System.ComponentModel.DataAnnotations.RegularExpression, System.ComponentModel.DataAnnotations.Range and System.ComponentModel.DataAnnotations.StringLength attributes.
I wanted to put a few examples together to demonstrate the usage of the attributes and their effect in the UI.
In my previous post I talked about "mapping between PageType attributes in PageTypeBuilder and typed pages in EPiServer 7". In this post I want to complete the series and talk about the mapping of property definitions in typed pages.
In my previous post I talked about the the "Differences when referencing the page type from a page template". This post describes the mapping between PageType attributes in PageTypeBuilder and typed pages in EPiServer 7 Preview.
EPiServer has introduced a whole load of cool new features to the forthcoming EPiServer 7 Preview. One of them is native support for strongly typed page types. Strongly typed page types has been available in the popular PageTypeBuilder project in previous versions of EPiServer for a while but now its built right into the core framework.
This is exciting stuff and something I am sure we are all eager to use. In many scenarios I am I think there is a good chance that projects which are due to be upgraded to EPiServer 7 already use PageTypeBuilder. So I wanted to put a post together that compares PageTypeBuilder with EPiServer 7 typed pages, including how to map from one to the other.