OnValidate()
OnValidate(key, value)
Performs additional custom processes when validating the element with the specified key and value.
key
The key of the element to validate.
value
The value of the element to validate.
Protected method.
The default implementation of this method is intended to be overridden by a derived class to perform some action when the specified element is validated. The On* methods are invoked only on the instance returned by the Dictionary property, but not on the instance returned by the InnerHashtable property.
Notes to Implementers
This method allows implementers to define processes that must be performed before setting the specified element in the underlying Hashtable. By defining this method, implementers can add functionality to inherited methods without having to override all other methods.
OnValidate can be used to impose restrictions on the type of objects that are accepted into the collection. The default implementation prevents Nothing from being added to or removed from the underlying Hashtable.