Dictionary Initialization In C#

This blog explains how can we initialize a Dictionary, as per a new feature in C# 6.0. Earlier, Dictionary of any type, say int, string can be initialized in the way given below.

Dictionary<int, string> dic = new Dictionary<int, string>
         {
             { 1, "User A" },
             { 2, "User B" },
             { 3, "User C" },
         };

In C# 6.0, another way of initialization was introduced with a slight change in the syntax. We can now directly create a key and assign a value to this key. Hence, as per the new technique, we can also have the code given below.

Dictionary<int, string> dic = new Dictionary<int, string>
           {
               [1] = "User C",
               [2] = "User B",
               [3] = "User C",
           };

           foreach (var item in dic)
           {
               Console.WriteLine($"Key is {item.Key} and Value is: {item.Value}");
           }

Run the code and see the results.

 

Happy coding.