Proper way to initialize a C# dictionary with values?

Question

I am creating a dictionary in a C# file with the following code:

private readonly Dictionary FILE_TYPE_DICT
        = new Dictiona         


        

Answer 1

With C# 6.0, you can create a dictionary in following way:

var dict = new Dictionary
{
    ["one"] = 1,
    ["two"] = 2,
    ["three"] = 3
};

It even works with custom types.