Editing Late binding (section)

===Late binding in .NET===
In .NET, late binding refers to [[method overriding|overriding]] a <code>virtual</code> method like C++ or implementing an interface. The compiler builds virtual tables for every virtual or interface method call which is used at run-time to determine the implementation to execute.

Also like COM and Java, the Common Language Runtime provides reflection APIs that can make late binding calls. The use of these calls varies by language.

With C# 4, the language also added the "dynamic" pseudo-type. This would be used in place of the Object type to indicate that late binding is desired. The specific late binding mechanism needed is determined at runtime using the Dynamic Language Runtime as a starting point.

Visual Basic uses them whenever the variable is of type Object and the compiler directive "Option Strict Off" is in force. This is the default setting for a new VB project. Prior to version 9, only .NET and COM objects could be late bound. With VB 10, this has been extended to DLR-based objects.