Exam Ref 70-483: Programming in C#

Objective 4.5: Store data in and retrieve data from collections

When you are working with some groups of data, you often use a collection. Collection objects are useful when you want to work with data in a flexible way. You might need to add and remove elements from a collection, you might have special performance needs, or you might need to access items. This is why the .NET Framework offers you an extensive set of collections that you can use.

This objective covers how to:

• Use the collections that are part of the .NET Framework.

• Choose which collection to use.

• Implement your own collections.

Using arrays

The most basic type that you can use to store a group of entities is an array. Arrays are useful when you are working with a fixed number of objects ...