extension method for a method C#

Question

Is there a way to have extension method on the method? Example for this would be method that takes some user object as parameter and you need to do security check if that user can use that method at the very beginning of the method. Can the method have extension method like "check can this user use me" and return bool.

Thanks.

Answer 1

You can use Aspect Oriented Programming (AOP) to implement cross-cutting security checks in your code.

In .NET you have a choice of several AOP frameworks, for example:

• Spring.NET
• PostSharp

In particular the PostSharp documentation has some nice examples on how to implement security using AOP.

Answer 2

You can't add extension method for a method with C#.

But you could use Aspect Oriented Programming (AOP) to do what you want, using PostSharp or Spring.NET for example.

• Example of securing methods with PostSharp

  public class BusinessDivision : BusinessObject
  {
      [SecuredOperation("Manager")]
      public void EnlistEmployee(Employee employee)
      {
          // Details omitted.
      }
  }