How to get and set an Item of a dictionary with C#

How to get and set an Item of a dictionary with C# 

The Item property gets and sets the value associated with the specified key. 

The following code snippet sets and gets an items value. 

Dictionary<string, Int16> AuthorList = new Dictionary<string, Int16>();

// Set Item value
AuthorList["Mahesh Chand"] = 20;

// Get Item value

Int16 age = Convert.ToInt16(AuthorList["Mahesh Chand"]);