Performs additional custom processes before inserting a new element into the DictionaryBase instance.

[Visual Basic]
Protected Overridable Sub OnInsert( _
   ByVal key As Object, _
   ByVal value As Object _
)
[C#]
protected virtual void OnInsert(
   object key,
   object value
);
[C++]
protected: virtual void OnInsert(
   Object* key,
   Object* value
);
[JScript]
protected function OnInsert(
   key : Object,
   value : Object
);

Parameters

key

The key of the element to insert.

value

The value of the element to insert.

Remarks

The default implementation of this method is intended to be overridden by a derived class to perform some action before the specified element is inserted.

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 inserting the element into the underlying System.Collections.Hashtable. By defining this method, implementers can add functionality to inherited methods without having to override all other methods.

OnInsert is invoked before the standard Insert behavior, whereas OnInsertComplete is invoked after the standard Insert behavior.

For example, implementers can restrict which types of objects can be inserted into the System.Collections.Hashtable.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

DictionaryBase Class | DictionaryBase Members | System.Collections Namespace | OnInsertComplete | OnSet | OnValidate