This print for content only-size & color not accurate 7" X 9-1/4" / casebound / malloy

// The ArrayList can hold anything at all.

ArrayList allMyObject = new ArrayList();

allMyObjects.Add(true);

allMyObjects.Add(new Car());

allMyObjects.Add(66);

allMyObjects.Add(3.14);

}

In some cases, you will require an extremely flexible container that can hold literally anything.

However, most of the time you desire a 

type-safe container that can only operate on a particular

type of data point. For example, you might need a container that can only hold database connec-

tions, bitmaps, IPointy-compatible objects, or what have you.

Building a Custom Collection

Prior to the introduction of generics in .NET 2.0, programmers attempted to address type safety by

manually building custom strongly typed collections. To illustrate why this can be problematic, cre-

ate a new Console Application project named CustomNonGenericCollection. Once you have done

so, be sure you import the System.Collections namespace. Now, assume you wish to create a cus-

tom collection that can only contain objects of type Person:

public class Person

{