WPF Validation Framework -

given following requirements:

• wpf application
• mvvm pattern
• validatable viewmodels
  • with nested (validatable) viewmodels
  • with nested collections of (validatable) viewmodels
• wpf controls become disabled on validation errors
  • e.g. binding views isenabled isvalid-property in viewmodels

is there built-in or third-party validation framework available wpf, or have write 1 on own? i've given idataerrorinfo try, failed when came validating nested viewmodels or entire collections.

thanks!

if want framework extensive validation support catel best shot.

it supports nested validation idea of nested user controls propagate validation information parent view models or user controls.

it has support warnings , works on field , business logic level.

the framework has infobarmessage control can display validation information won't have create template those.

it has extension module supports fluent validation, similar fluent nhibernate or entity framework validation.