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Collection Initializers in C# 3.0 | Basic Tutorial

Collection Initializers is a new concept introduced in C# 3.0.  By implementing this concept in your code you can save your time for initializing individual property of your class.  In C# 2.0 you can initialize a collection you can use the following syntax.

public class Book
   public Book() { }

   public string BookName { get; set; }
   public string Price {get;set;}


And then you can add the items in collection objects as
// now create the object of Book Collection
   void InitilizeBookCollection()
       List<Book> bookCollection = new List<Book>();
       bookCollection.Add(new Book { BookName = "C#", Price = "$250" });
       // and so on

Just imagine if you have 3 more classes along with 10 properties, you have to spend lots of time to create the constructors don’t you? However in C# introduced a new concept called collection Initializers which is the extensions of object Initializers and helps developer to control their code easily. You can initialize your collections in a very fast and easy way. You can create instance of collection in a simple way. Objects those implemented System.Collections.Generic.ICollection<T> can use this features.

//object initilizers
       List<Book> bookCollection = new List<Book>()
               new Book{ BookName="C#4.0", Price="$450"},
               new Book{ BookName="SQL 2010", Price="$250"},
               // and so on

No need to use “Add” method in our collection. If you notice the code is also looks much clear and compact.

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