StateManagedCollection.OnValidate Method (Object)
When overridden in a derived class, validates an element of the StateManagedCollection collection.
Assembly: System.Web (in System.Web.dll)
The StateManagedCollection implementation of the IList interface methods. The default implementation is to verify that the object manipulated by the collection is not null; however, collections derived from StateManagedCollection override the method to perform any additional validation, such as type-checking.method is called to validate the object manipulated through the
Available since 2.0