In MVC is actionform considered a part of the view or the controller?

[asifur_rahman]

There seems to be some disagreement among my collegues regarding wether 
actrionform is logically is part of View or the Controller in MVC, this is 
relevent to us in drawing high level sequence diagrams.  I personally feel 
that it is a part of the view, because if a request goes to the view and 
validation fails, an error message is returned to the user without 
invoking any controller logic.  Any opinions?  Thanks.