Boxing and unboxing: when does it come up?

Question

So I understand what boxing and unboxing is. When\'s it come up in real-world code, or in what examples is it an issue? I can\'t imagine doing something like this example:

Answer 1

Boxing (in my experience) usually occurs in these cases:

• A value type is passed to a method that accepts an argument of type Object.
• A value type is added to a non-generic collection (like an ArrayList).

Other times you can see boxing and unboxing is when you use reflection as the .NET framework's reflection API makes heavy use of Object.