How to execute a method everytime before/after executing some other method which has many overloads?

Question

I have an existing application which is already developed and is in use.

There are multiple overloads of one of the methods (called Read()) of a class. Now I want t

Answer 1

Have a generic method

public void Read<T>(T t) where t:ISomeCommonInterface
{
   Before();
   Read(t);
   After();
}

Answer 2

You need to use an Interceptor / AoP. The first options that jump to mind are PostSharp and Microsoft Unity.

There's a very good article on this sort of thing in this months MSDN magazine: http://msdn.microsoft.com/en-us/magazine/gg490353.aspx