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

// Create ArrayList and fill with some initial values.

ArrayList carArList = new ArrayList();

carArList.AddRange(new Car[] { new Car("Fred", 90, 10),

new Car("Mary", 100, 50), new Car("MB", 190, 11)});

// Print out # of items in ArrayList.

Console.WriteLine("Items in carArList: {0}", carArList.Count);

// Print out current values.

foreach(Car c in carArList)

Console.WriteLine("Car pet name: {0}", c.PetName);

// Insert a new item.

Console.WriteLine("->Inserting new Car.");

carArList.Insert(2, new Car("TheNewCar", 0, 12));

Console.WriteLine("Items in carArList: {0}", carArList.Count);

// Get object array from ArrayList and print again.

object[] arrayOfCars = carArList.ToArray();

for(int i = 0; i < arrayOfCars.Length; i++)

{

Console.WriteLine("Car pet name: {0}",

((Car)arrayOfCars[i]).PetName);

}

}

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8849CH10.qxd  9/25/07  4:17 PM  Page 313

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Here you are making use of the AddRange() method to populate your ArrayList with an array of

Car types (which is basically a shorthand notation for calling Add() n number of times). Once you

print out the number of items in the collection (as well as enumerate over each item to obtain the

pet name), you invoke Insert(). As you can see, Insert() allows you to plug a new item into the

ArrayList at a specified index.

Finally, notice the call to the ToArray() method, which returns an array of System.Object types

based on the contents of the original ArrayList. From this array, we loop over the items once again

using the array’s indexer syntax. If you call this method from within Main(), you will find the

ArrayList has indeed grown by one item to account for the new Car object.