A collection in .NET defines a group of related data or elements. Elements can be variables of simple data types such as int, float, or String or can be complex data variables such as a class or structure. While working with .NET applications, we often need to work with such collections. We can execute operations such as these:

• Creating a collection
• Adding an element to a collection
• Reading elements present in the collection
• Removing elements present in the collection

In this section, we will understand what the different types of collections available in .NET are and how programmers can execute operations on them.