You can use the DynamicMethod class to generate and execute a method at run time, without having to generate a dynamic assembly and a dynamic type to contain the method. The executable code created by the just-in-time (JIT) compiler is reclaimed when the DynamicMethod object is reclaimed. Dynamic methods are the most efficient way to generate and execute small amounts of code.

A dynamic method can be anonymously hosted, or it can be logically associated with a module or with a type.

Source: http://msdn2.microsoft.com/en-us/library/system.reflection.emit.dynamicmethod.aspx

.NET version: 2.0,3.0,3.5