Data Structures and Algorithms with Object-Oriented Design Patterns in C#
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Null References

In C#, it is possible for a reference type variable to refer to nothing at all. A reference that refers to nothing at all is called a null reference  . By default, an uninitialized reference is null.

We can explicitly assign the null reference to a variable like this:

f = null;
Also, we can test explicitly for the null reference like this
if (f == null)
    { /* ... */ }


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Bruno Copyright © 2001 by Bruno R. Preiss, P.Eng. All rights reserved.