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Answer Posted / pooja gupta
Binding refers the object type definition. You are using
Early Binding if the object type is specified when
declaring your object. Eg if you say Dim myObject as
ADODB.Recordset that is early binding (VB example).
If on the other hand you declare your object as a generic
type you are late binding. Eg if you Dim myObject as Object
(VB example).
One should note that binding is determined at object
declaration and not at object instantiation. Therefore it
does not matter if you later go on to Set myObject = New
ADODB.Recordset or Set myObject = CreateObject
(”ADODB.Recordset”).
Early binding allows developers to interact with the
object’s properties and methods during coding. You can
enjoy the benefits of intellisense. Also, early binding
permits the compiler to check your code. Errors are caught
at compile time. Early binding also results in faster code.
It’s disadvantage is that you cannot create a generic
object which may be bound to different types of objects.
Late binding on the other hand permits defining generic
objects which may be bound to different objects. Eg you
could declare myControl as Control without knowing which
control you will encounter. You could then query the
Controls collection and determine which control you are
working on using the TypeOf method and branch to the
section of your code that provides for that type. This is
the only benefit of late binding. It’s disadvantages are
that it is error prone and you will not enjoy much
intellisense whilst coding.
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