Question:

My co-worker brought the following link to my attention.

http://www.codeproject.com/csharp/csharpintro01.asp

He asked me what the following is for  (in the Dog class)

public new void Talk()
{
Console.WriteLine(“Dog talk”);
}

He was asking what new meant in the method definition. I’m not entirely sure… what can you do with this that you can’t do with overriding a virtual method? What is this used for.

Solution:

There isn’t a huge difference…

http://msdn2.microsoft.com/en-us/library/435f1dw2.aspx

the new keyword explicitly hides a member inherited from a base class. Hiding an inherited member means that the derived version of the member replaces the base-class version. Hiding members without the use of the new modifier is allowed, but generates a warning.

http://msdn2.microsoft.com/en-us/library/ebca9ah3.aspx

The override modifier is required to extend or modify the abstract or virtual implementation of an inherited method, property, indexer, or event.

Here is a good example:

http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=520024&SiteID=1